diff --git a/Makefile b/Makefile
index 6af8e51..502f3cc 100644
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,7 @@ CONFIGURE = $(SRC_DIR)/
 COV_DIR=$(OUT)/coverage/
 APP_DIR=$(SRC_DIR)/apps/
 CC=gcc
+SHELL=/bin/bash
 
 CCFLAGS = -Wall -Werror
 CCFLAGS += -std=c99 -D_POSIX_C_SOURCE=200809L
@@ -58,7 +59,7 @@ define run_tests =
 	@for i in $(TESTS); do \
 		echo "    TEST $$i"; \
 		$$i | sed 's/^/         /'; \
-		if [ $$? -ne 0 ]; then \
+		if [ $${PIPESTATUS[0]} -ne 0 ]; then \
 			exit 1; \
 		fi; \
 	done;