diff --git a/rules.mk b/rules.mk
index 26ce4b5..17ca407 100644
--- a/rules.mk
+++ b/rules.mk
@@ -6,12 +6,12 @@
 
 $(rastertoqpdl_TARGET): $(rastertoqpdl_OBJ)
 	$(call printCmd, $(cmd_link))
-	$(Q)g++ -o $@ $^ $(rastertoqpdl_CXXFLAGS) $(rastertoqpdl_LDFLAGS) \
+	$(Q)$(CXX) -o $@ $^ $(rastertoqpdl_CXXFLAGS) $(rastertoqpdl_LDFLAGS) \
 		$(rastertoqpdl_LIBS)
 
 $(pstoqpdl_TARGET): $(pstoqpdl_OBJ)
 	$(call printCmd, $(cmd_link))
-	$(Q)g++ -o $@ $^ $(pstoqpdl_CXXFLAGS) $(pstoqpdl_LDFLAGS) \
+	$(Q)$(CXX) -o $@ $^ $(pstoqpdl_CXXFLAGS) $(pstoqpdl_LDFLAGS) \
 		$(pstoqpdl_LIBS)
 
 .PHONY: install installcms