diff --git a/compiler/pgenutil.pas b/compiler/pgenutil.pas
index 6275b59081..fd37efe3bd 100644
--- a/compiler/pgenutil.pas
+++ b/compiler/pgenutil.pas
@@ -1708,6 +1708,7 @@ uses
         result:=nil;
 
         pd:=nil;
+        hmodule:=nil;
 
         if not check_generic_constraints(genericdef,context.paramlist,context.poslist) then
           begin