diff --git a/configure/RULES_BUILD b/configure/RULES_BUILD
index 5d335c126..0d7793e56 100644
--- a/configure/RULES_BUILD
+++ b/configure/RULES_BUILD
@@ -380,7 +380,7 @@ endif
 # Generate a perl program to exec the real test binary.
 %.t: %$(EXE) $(TOOLS)/makeTestfile.pl
 	@$(RM) $@
-	$(PERL) $(TOOLS)/makeTestfile.pl "$(T_A)" $(EPICS_HOST_ARCH) $@ $<
+	$(PERL) $(TOOLS)/makeTestfile.pl $(T_A) $(EPICS_HOST_ARCH) $@ $<
 
 #---------------------------------------------------------------
 # Generate header with version number from VCS