diff --git a/src/main/resources/value/vdouble/scalar/SISCALAR.java b/src/main/resources/value/vdouble/scalar/SISCALAR.java
index fbad72f..2442672 100644
--- a/src/main/resources/value/vdouble/scalar/SISCALAR.java
+++ b/src/main/resources/value/vdouble/scalar/SISCALAR.java
@@ -166,7 +166,7 @@ public SIScalar reciprocal()
     public static SIScalar valueOf(final String text)
     {
         Throw.whenNull(text, "Error parsing SIScalar: unitString is null");
-        Throw.when(text.length() == 0, IllegalArgumentException.class, "Error parsing SIScalar: empty unitString");
+        Throw.when(text.length() == 0, IllegalArgumentException.class, "Error parsing SIScalar: empty string");
         try
         {
             NumberParser numberParser = new NumberParser().lenient().trailing();
@@ -196,7 +196,6 @@ public static SIScalar valueOf(final String text)
     public static SIScalar of(final double value, final String unitString)
     {
         Throw.whenNull(unitString, "Error parsing SIScalar: unitString is null");
-        Throw.when(unitString.length() == 0, IllegalArgumentException.class, "Error parsing SIScalar: empty unitString");
         try
         {
             SIUnit unit = Unit.lookupOrCreateUnitWithSIDimensions(SIDimensions.of(unitString));
diff --git a/src/main/resources/value/vfloat/scalar/FLOATSISCALAR.java b/src/main/resources/value/vfloat/scalar/FLOATSISCALAR.java
index cf13d82..9019ff9 100644
--- a/src/main/resources/value/vfloat/scalar/FLOATSISCALAR.java
+++ b/src/main/resources/value/vfloat/scalar/FLOATSISCALAR.java
@@ -165,7 +165,7 @@ public FloatSIScalar reciprocal()
     public static FloatSIScalar valueOf(final String text)
     {
         Throw.whenNull(text, "Error parsing SIScalar: unitString is null");
-        Throw.when(text.length() == 0, IllegalArgumentException.class, "Error parsing SIScalar: empty unitString");
+        Throw.when(text.length() == 0, IllegalArgumentException.class, "Error parsing SIScalar: empty string");
         try
         {
             NumberParser numberParser = new NumberParser().lenient().trailing();
@@ -195,7 +195,6 @@ public static FloatSIScalar valueOf(final String text)
     public static FloatSIScalar of(final float value, final String unitString)
     {
         Throw.whenNull(unitString, "Error parsing FloatSIScalar: unitString is null");
-        Throw.when(unitString.length() == 0, IllegalArgumentException.class, "Error parsing FloatSIScalar: empty unitString");
         try
         {
             SIUnit unit = Unit.lookupOrCreateUnitWithSIDimensions(SIDimensions.of(unitString));