diff --git a/testbench/trek_files/Makefile b/testbench/trek_files/Makefile
index 34409e0ae..08c916ced 100644
--- a/testbench/trek_files/Makefile
+++ b/testbench/trek_files/Makefile
@@ -1,3 +1,4 @@
+SHELL 					 := /bin/bash
 TREKFILES        := $(WALLY)/testbench/trek_files
 PLATFORM_YAML    := $(TREKFILES)/platform.yaml
 TREKSVIP_YAML    := $(BREKER_HOME)/examples/tutorials/svip/treksvip/yaml/treksvip.yaml
diff --git a/tests/breker/Makefile b/tests/breker/Makefile
index 6fe052277..bdb26bf87 100644
--- a/tests/breker/Makefile
+++ b/tests/breker/Makefile
@@ -1,4 +1,4 @@
-shell := /bin/bash
+SHELL := /bin/bash
 
 # Breker/Trek paths and variables
 TESTDIR          := $(WALLY)/tests/breker/work