diff --git a/Makefile b/Makefile
index 42618069cca13f396cfd13910385a0424dc13188..a02ce8f0301cc1fd7e1248d43251735aa6c6f390 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SHELL := bash
+SHELL := /bin/bash
 
 DB_HOST ?= 127.0.0.1
 
@@ -8,6 +8,6 @@ test:
 	go test -v -bench=. ./lib/... && \
 	go test -v -bench=. ./internal/... && \
 	for ADAPTER in postgresql mysql sqlite ql mongo; do \
-		$(MAKE) -C $(ADAPTER) test; \
+		$(MAKE) -C $$ADAPTER test; \
 	done && \
 	go test -v