diff --git a/Makefile b/Makefile
index 645a604a7..7d746e4fc 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,7 @@ benchmark:
 
 
 # testing
-TEST_FLAGS := -race -failfast -count=1 -timeout=20m -p=1
+TEST_FLAGS := -race -failfast -count=1 -timeout=20m
 COVDATA_DIR := $(CURDIR)/covdata
 GO_COVERAGE_OUTPUT := coverage.out
 GO_COVERAGE_OUTPUT_TMP := $(GO_COVERAGE_OUTPUT).tmp