diff --git a/client/Makefile b/client/Makefile
index 9711da4e..32110ec9 100644
--- a/client/Makefile
+++ b/client/Makefile
@@ -1,6 +1,6 @@
 include ../common.mk
 
-TEST_CSVS := $(if $(ANNOTATIONS),$(ANNOTATIONS),../backend/test/fixtures/{pbmc3k-annotations.csv, pbmc3k-genesets.csv})
+TEST_CSVS := $(if $(ANNOTATIONS),$(ANNOTATIONS),../backend/test/fixtures/{pbmc3k-annotations.csv,pbmc3k-genesets.csv})
 ANNOTATIONS_FILENAME := $(shell basename $(ANNOTATIONS))
 
 CXG_CONFIG := $(if $(CXG_CONFIG), $(CXG_CONFIG), ./__tests__/e2e/test_config.yaml)