diff --git a/shared/src/test/scala/squants/motion/VolumeFlowSpec.scala b/shared/src/test/scala/squants/motion/VolumeFlowSpec.scala
index 9938b7a1..13f51663 100644
--- a/shared/src/test/scala/squants/motion/VolumeFlowSpec.scala
+++ b/shared/src/test/scala/squants/motion/VolumeFlowSpec.scala
@@ -128,10 +128,10 @@ class VolumeFlowSpec extends AnyFlatSpec with Matchers with CustomMatchers {
     MillilitresPerHour(1).toString(MillilitresPerHour) should be("1.0 ml/h")
     MillilitresPerMinute(1).toString(MillilitresPerMinute) should be("1.0 ml/min")
     MillilitresPerSecond(1).toString(MillilitresPerSecond) should be("1.0 ml/s")
-    CubicFeetPerDay(1).toString(CubicFeetPerHour) should be("1.0 ft³/d")
+    CubicFeetPerDay(1).toString(CubicFeetPerDay) should be("1.0 ft³/d")
     CubicFeetPerHour(1).toString(CubicFeetPerHour) should be("1.0 ft³/hr")
-    CubicFeetPerMinute(1).toString(CubicFeetPerHour) should be("1.0 ft³/m")
-    CubicFeetPerSecond(1).toString(CubicFeetPerHour) should be("1.0 cfs")
+    CubicFeetPerMinute(1).toString(CubicFeetPerMinute) should be("1.0 ft³/m")
+    CubicFeetPerSecond(1).toString(CubicFeetPerSecond) should be("1.0 cfs")
     GallonsPerDay(1).toString(GallonsPerDay) should be("1.0 GPD")
     GallonsPerHour(1).toString(GallonsPerHour) should be("1.0 GPH")
     GallonsPerMinute(1).toString(GallonsPerMinute) should be("1.0 GPM")