diff --git a/src/mesa/drivers/dri/i965/Android.mk b/src/mesa/drivers/dri/i965/Android.mk
index a3d010a5894..8c4a613bcf3 100644
--- a/src/mesa/drivers/dri/i965/Android.mk
+++ b/src/mesa/drivers/dri/i965/Android.mk
@@ -312,15 +312,12 @@ LOCAL_GENERATED_SOURCES += $(addprefix $(intermediates)/, \
 i965_oa_xml_FILES := $(addprefix $(LOCAL_PATH)/, \
 	$(i965_oa_xml_FILES))
 
-$(intermediates)/brw_oa_metrics.h: $(LOCAL_PATH)/brw_oa.py $(i965_oa_xml_FILES)
-	@echo "target Generated: $(PRIVATE_MODULE) <= $(notdir $(@))"
-	@mkdir -p $(dir $@)
-	$(hide) $(MESA_PYTHON2) $< --header=$@ $(i965_oa_xml_FILES)
-
 $(intermediates)/brw_oa_metrics.c: $(LOCAL_PATH)/brw_oa.py $(i965_oa_xml_FILES)
 	@echo "target Generated: $(PRIVATE_MODULE) <= $(notdir $(@))"
 	@mkdir -p $(dir $@)
-	$(hide) $(MESA_PYTHON2) $< --code=$@ $(i965_oa_xml_FILES)
+	$(hide) $(MESA_PYTHON2) $< --code=$@ $(i965_oa_xml_FILES) --header=$@ $(i965_oa_xml_FILES)
+
+$(intermediates)/brw_oa_metrics.h: $(intermediates)/brw_oa_metrics.c
 
 include $(MESA_COMMON_MK)
 include $(BUILD_SHARED_LIBRARY)
diff --git a/src/mesa/drivers/dri/i965/Makefile.am b/src/mesa/drivers/dri/i965/Makefile.am
index 8c8ecc6d76b..fe106b4257c 100644
--- a/src/mesa/drivers/dri/i965/Makefile.am
+++ b/src/mesa/drivers/dri/i965/Makefile.am
@@ -114,11 +114,7 @@ EXTRA_DIST = \
 	$(i965_oa_xml_FILES) \
 	meson.build
 
-# Note: we avoid using a multi target rule here and outputting both the
-# .c and .h files in one go so we don't hit problems with parallel
-# make and multiple invocations of the same script trying to write
-# to the same files.
-brw_oa_metrics.h: brw_oa.py $(i965_oa_xml_FILES)
-	$(PYTHON2) $(PYTHON_FLAGS) $(srcdir)/brw_oa.py --header=$(builddir)/brw_oa_metrics.h $(i965_oa_xml_FILES)
 brw_oa_metrics.c: brw_oa.py $(i965_oa_xml_FILES)
-	$(PYTHON2) $(PYTHON_FLAGS) $(srcdir)/brw_oa.py --code=$(builddir)/brw_oa_metrics.c $(i965_oa_xml_FILES)
+	$(PYTHON2) $(PYTHON_FLAGS) $(srcdir)/brw_oa.py --code=$(builddir)/brw_oa_metrics.c --header=$(builddir)/brw_oa_metrics.h $(i965_oa_xml_FILES)
+
+brw_oa_metrics.h: brw_oa_metrics.c