diff --git a/Makefile b/Makefile
index e0424224..67ee613c 100644
--- a/Makefile
+++ b/Makefile
@@ -54,7 +54,7 @@ EXTENSION_FLAGS=\
 -DDUCKDB_EXTENSION_${EXTENSION_NAME}_SHOULD_LINK=1 \
 -DDUCKDB_EXTENSION_${EXTENSION_NAME}_LOAD_TESTS=1 \
 -DDUCKDB_EXTENSION_${EXTENSION_NAME}_INCLUDE_PATH="$(PROJ_DIR)spatial/include" \
--DDUCKDB_EXTENSION_${EXTENSION_NAME}_TEST_PATH="$(PROJ_DIR)test"
+-DDUCKDB_EXTENSION_${EXTENSION_NAME}_TEST_PATH="$(PROJ_DIR)test" \
 -DDUCKDB_EXTENSION_${EXTENSION_NAME}_LINKED_LIBS="../../deps/local/lib/*.a"
 
 #### Add more of the DuckDB in-tree extensions here that you need (also feel free to remove them when not needed)