diff --git a/ckconv/conv.hpp b/ckconv/conv.hpp
index c4021e9..d0b7906 100644
--- a/ckconv/conv.hpp
+++ b/ckconv/conv.hpp
@@ -318,9 +318,9 @@ namespace conv {
 		if (str == "rd" || s.find("rod") < s.size())
 			return *Imperial.ROD;
 		#endif // DISABLE_NUTJOB_UNITS
-		if (str == "in" || s == "i" || s.find("inch") < s.size())
+		if (str == "\"" || str == "in" || s == "i" || s.find("inch") < s.size())
 			return *Imperial.INCH;
-		if (str == "ft" || s == "f" || s.find("foot") < s.size() || s.find("feet") < s.size())
+		if (str == "\'" || str == "ft" || s == "f" || s.find("foot") < s.size() || s.find("feet") < s.size())
 			return *Imperial.FOOT;
 		if (str == "yd" || s.find("yard") < s.size())
 			return *Imperial.YARD;
diff --git a/ckconv/global.h b/ckconv/global.h
index fe5856d..071dfe0 100644
--- a/ckconv/global.h
+++ b/ckconv/global.h
@@ -94,8 +94,7 @@ namespace ckconv {
 			ss << global.csync(global.ResultColor) << outValue_s << global.csync();
 
 			if (!global.quiet)
-				ss 
-				<< ' ' << global.csync(global.UnitColor) << outUnit_s << global.csync();
+				ss << ' ' << global.csync(global.UnitColor) << outUnit_s << global.csync();
 
 			return ss.str();
 		}
diff --git a/ckconv/util.h b/ckconv/util.h
index c33d722..ddd3bec 100644
--- a/ckconv/util.h
+++ b/ckconv/util.h
@@ -60,15 +60,14 @@ namespace ckconv {
 				for (const auto& c : s) {
 					if (str::stdpred::isdigit(c))
 						digit = true;
-					else if (str::stdpred::isalpha(c))
+					else if (str::stdpred::isalpha(c) || c == '\'' || c == '\"')
 						alpha = true;
 					else if (c == '.') {
 						if (++decimalPointCount > 1)
 							throw make_exception("Input '", s, "' isn't valid! (Too many decimal places)");
 					}
 					else if (c == '-') {
-						if (digit)
-							throw make_exception("Input '", s, "' isn't valid! (Negative sign must precede number)");
+						if (digit) throw make_exception("Input '", s, "' isn't valid! (Negative sign must precede number)");
 					}
 					else {
 						invalid = true;