diff --git a/core/jacoco.mk b/core/jacoco.mk
index fa31fef..33d45d5e 100644
--- a/core/jacoco.mk
+++ b/core/jacoco.mk
@@ -68,6 +68,7 @@
 	  -d $(PRIVATE_UNZIPPED_PATH) \
 	  $(PRIVATE_INCLUDE_ARGS)
 	(cd $(PRIVATE_UNZIPPED_PATH) && rm -rf $(PRIVATE_EXCLUDE_ARGS))
+	(cd $(PRIVATE_UNZIPPED_PATH) && find -not -name "*.class" -type f | xargs --no-run-if-empty rm)
 	touch $(PRIVATE_UNZIPPED_TIMESTAMP_PATH)
 # Unfortunately in the previous task above,
 # 'rm -rf $(PRIVATE_EXCLUDE_ARGS)' needs to be a separate