diff --git a/infer/tests/build_systems/utf8_in_pwd/Makefile b/infer/tests/build_systems/utf8_in_pwd/Makefile
index 7a211208d..4eff31eda 100644
--- a/infer/tests/build_systems/utf8_in_pwd/Makefile
+++ b/infer/tests/build_systems/utf8_in_pwd/Makefile
@@ -47,7 +47,7 @@ $(UTF8_DIR):
 	$(MKDIR_P) $@
 
 $(CMAKE_DIR): $(CMAKE_SOURCES) $(UTF8_DIR)
-	rsync -aL $(CMAKE_SOURCES_DIR)/ $@/
+	rsync -aL --exclude='_build*' $(CMAKE_SOURCES_DIR)/ $@/
 	touch $@
 
 $(GRADLE_DIR): $(GRADLE_SOURCES) $(UTF8_DIR)