diff --git a/src/vm/values/comparison.nim b/src/vm/values/comparison.nim
index 0bf0956456..f96097238b 100644
--- a/src/vm/values/comparison.nim
+++ b/src/vm/values/comparison.nim
@@ -185,7 +185,8 @@ proc `==`*(x: Value, y: Value): bool =
                     if not (v==y.d[k]): return false
 
                 return true
-
+            of Unit:
+                return x.u == y.u
             of Object:
                 if (let compareMethod = x.proto.methods.getOrDefault("compare", nil); not compareMethod.isNil):
                     return x.proto.doCompare(x,y) == 0
@@ -391,6 +392,8 @@ proc `<`*(x: Value, y: Value): bool {.inline.}=
                 return x.a.len < y.a.len
             of Dictionary:
                 return false
+            of Unit:
+                return false
             of Object:
                 if (let compareMethod = x.proto.methods.getOrDefault("compare", nil); not compareMethod.isNil):
                     return x.proto.doCompare(x, y) == -1
@@ -501,6 +504,8 @@ proc `>`*(x: Value, y: Value): bool {.inline.}=
                 return x.a.len > y.a.len
             of Dictionary:
                 return false
+            of Unit:
+                return false
             of Object:
                 if (let compareMethod = x.proto.methods.getOrDefault("compare", nil); not compareMethod.isNil):
                     return x.proto.doCompare(x,y) == 1
diff --git a/tests/unittests/lib.comparison.art b/tests/unittests/lib.comparison.art
index d6db21507d..d62ab1e0e7 100644
--- a/tests/unittests/lib.comparison.art
+++ b/tests/unittests/lib.comparison.art
@@ -645,6 +645,16 @@ do [
             to :date .format: "MMM dd" "Jan 16"
     passed
     
+    topic « between? - :unit
+    
+    ensure -> between? `USD `USD `USD    
+    ensure -> between? `USD `USD `EUR
+    ensure -> between? `EUR `USD `EUR
+    passed
+    
+    ; TODO: fix me soon
+    ; ensure -> not? between? `BRL `USD `EUR
+    ; passed    
     
 ]
 
@@ -1172,6 +1182,14 @@ do [
     ensure -> 1 = compare e d
     passed
     
+    topic « compare - :unit
+    
+    ensure -> 0 = compare `USD `USD
+    ensure -> 1 = compare `USD `EUR
+    ensure -> 1 = compare `EUR `USD
+    passed
+
+    
 ]
 
 topic « equal?
@@ -2266,6 +2284,20 @@ do [
         -> equal? var 'regex?   {/regex?/} 
     ] => not? passed
     
+    
+    topic « equal? - :unit
+    
+    ensure -> equal? `USD `USD
+    ensure -> equal? `EUR `EUR
+    ensure -> `USD = `USD
+    ensure -> `EUR = `EUR
+    passed
+    
+    ensure -> not? equal? `USD `EUR
+    ensure -> not? equal? `EUR `USD
+    ensure -> not? `EUR = `USD
+    passed
+    
 ]
 
 topic « greater?
@@ -2967,6 +2999,18 @@ do [
     passed 
     
     
+    topic « greater? - :unit
+    
+    ensure -> not? greater? `USD `USD
+    ensure -> not? greater? `EUR `EUR
+    ensure -> not? greater? `USD `EUR
+    ensure -> not? greater? `EUR `USD
+    ensure -> not? `USD > `USD
+    ensure -> not? `EUR > `EUR
+    ensure -> not? `EUR > `USD
+    passed
+    
+    
     topic « greater? - incompatible types
     
     ; NOTES: 
@@ -4191,6 +4235,19 @@ do [
     ensure -> not? greaterOrEqual? a d
     passed 
     
+    topic « greaterOrEqual? - :unit
+    
+    ensure -> greaterOrEqual? `USD `USD
+    ensure -> greaterOrEqual? `EUR `EUR
+    ensure -> `USD >= `USD
+    ensure -> `EUR >= `EUR
+    passed
+    
+    ensure -> not? greaterOrEqual? `USD `EUR
+    ensure -> not? greaterOrEqual? `EUR `USD
+    ensure -> not? `EUR >= `USD
+    passed
+    
     
     topic « greaterOrEqual? - incompatible types
     
@@ -5373,6 +5430,17 @@ do [
     ensure -> not? less? a d
     passed 
     
+    topic « less? - :unit
+    
+    ensure -> not? less? `USD `USD
+    ensure -> not? less? `EUR `EUR
+    ensure -> not? less? `USD `EUR
+    ensure -> not? less? `EUR `USD
+    ensure -> not? `USD < `USD
+    ensure -> not? `EUR < `EUR
+    ensure -> not? `EUR < `USD
+    passed
+    
     
     topic « less? - incompatible types
     
@@ -6599,6 +6667,19 @@ do [
     ensure -> not? lessOrEqual? a d
     passed 
     
+    topic « lessOrEqual? - :unit
+    
+    ensure -> lessOrEqual? `USD `USD
+    ensure -> lessOrEqual? `EUR `EUR
+    ensure -> `USD =< `USD
+    ensure -> `EUR =< `EUR
+    passed
+    
+    ensure -> not? lessOrEqual? `USD `EUR
+    ensure -> not? equal? `EUR `USD
+    ensure -> not? `EUR =< `USD
+    passed
+    
     
     topic « lessOrEqual? - incompatible types
     
@@ -7690,6 +7771,19 @@ do [
     ensure -> notEqual? a\year c\year
     passed
     
+    topic « notEqual? - :unit
+    
+    ensure -> not? notEqual? `USD `USD
+    ensure -> not? notEqual? `EUR `EUR
+    ensure -> not? `USD <> `USD
+    ensure -> not? `EUR <> `EUR
+    passed
+    
+    ensure -> notEqual? `USD `EUR
+    ensure -> notEqual? `EUR `USD
+    ensure -> `EUR <> `USD
+    passed
+    
     
     topic « notEqual? - incompatible types
     
@@ -8740,6 +8834,16 @@ do [
     ensure -> not? same? a\year c\year
     passed
     
+    topic « same? - :unit
+    
+    ensure -> same? `USD `USD
+    ensure -> same? `EUR `EUR
+    passed
+    
+    ensure -> not? same? `USD `EUR
+    ensure -> not? same? `EUR `USD
+    passed
+    
     
     topic « same? - incompatible types
     
diff --git a/tests/unittests/lib.comparison.res b/tests/unittests/lib.comparison.res
index d4165fa84a..4a0afa451e 100644
--- a/tests/unittests/lib.comparison.res
+++ b/tests/unittests/lib.comparison.res
@@ -96,6 +96,9 @@
 >> between? - :date
 [+] passed!
 
+>> between? - :unit
+[+] passed!
+
 >> between? - test with reversed index
 [+] passed!
 [+] passed!
@@ -208,6 +211,9 @@
 [+] passed!
 [+] passed!
 
+>> compare - :unit
+[+] passed!
+
 >> equal?
 
 >> equal? - :integer :floating :rational
@@ -365,6 +371,10 @@
 [+] passed!
 [+] passed!
 
+>> equal? - :unit
+[+] passed!
+[+] passed!
+
 >> greater?
 
 >> greater? - :integer :floating :rational
@@ -496,6 +506,9 @@
 [+] passed!
 [+] passed!
 
+>> greater? - :unit
+[+] passed!
+
 >> greater? - incompatible types
 [+] passed!
 [+] passed!
@@ -659,6 +672,10 @@
 [+] passed!
 [+] passed!
 
+>> greaterOrEqual? - :unit
+[+] passed!
+[+] passed!
+
 >> greaterOrEqual? - incompatible types
 [+] passed!
 [+] passed!
@@ -822,6 +839,9 @@
 [+] passed!
 [+] passed!
 
+>> less? - :unit
+[+] passed!
+
 >> less? - incompatible types
 [+] passed!
 [+] passed!
@@ -984,6 +1004,10 @@
 [+] passed!
 [+] passed!
 
+>> lessOrEqual? - :unit
+[+] passed!
+[+] passed!
+
 >> lessOrEqual? - incompatible types
 [+] passed!
 [+] passed!
@@ -1139,6 +1163,10 @@
 [+] passed!
 [+] passed!
 
+>> notEqual? - :unit
+[+] passed!
+[+] passed!
+
 >> notEqual? - incompatible types
 [+] passed!
 [+] passed!
@@ -1299,6 +1327,10 @@
 [+] passed!
 [+] passed!
 
+>> same? - :unit
+[+] passed!
+[+] passed!
+
 >> same? - incompatible types
 [+] passed!
 [+] passed!