diff --git a/etc/codeTemplates/dynamicCode/codeStreamTemplate.C b/etc/codeTemplates/dynamicCode/codeStreamTemplate.C
index 3288b7cefb..5d69d99632 100644
--- a/etc/codeTemplates/dynamicCode/codeStreamTemplate.C
+++ b/etc/codeTemplates/dynamicCode/codeStreamTemplate.C
@@ -29,6 +29,7 @@ Description
 #include "dictionary.H"
 #include "Ostream.H"
 #include "Pstream.H"
+#include "unitConversion.H"
 
 //{{{ begin codeInclude
 ${codeInclude}
diff --git a/etc/codeTemplates/dynamicCode/fixedValueFvPatchFieldTemplate.C b/etc/codeTemplates/dynamicCode/fixedValueFvPatchFieldTemplate.C
index a8b6a6da67..c7f442f03a 100644
--- a/etc/codeTemplates/dynamicCode/fixedValueFvPatchFieldTemplate.C
+++ b/etc/codeTemplates/dynamicCode/fixedValueFvPatchFieldTemplate.C
@@ -28,6 +28,7 @@ License
 #include "fvPatchFieldMapper.H"
 #include "volFields.H"
 #include "surfaceFields.H"
+#include "unitConversion.H"
 //{{{ begin codeInclude
 ${codeInclude}
 //}}} end codeInclude
diff --git a/etc/codeTemplates/dynamicCode/functionObjectTemplate.C b/etc/codeTemplates/dynamicCode/functionObjectTemplate.C
index 61cba180c3..a747b528b6 100644
--- a/etc/codeTemplates/dynamicCode/functionObjectTemplate.C
+++ b/etc/codeTemplates/dynamicCode/functionObjectTemplate.C
@@ -26,6 +26,7 @@ License
 #include "functionObjectTemplate.H"
 #include "Time.H"
 #include "fvCFD.H"
+#include "unitConversion.H"
 
 //{{{ begin codeInclude
 ${codeInclude}