diff --git a/lib/libesp32/berry/Makefile b/lib/libesp32/berry/Makefile
index 0847eb4b2..5907e22db 100755
--- a/lib/libesp32/berry/Makefile
+++ b/lib/libesp32/berry/Makefile
@@ -3,7 +3,7 @@ DEBUG_FLAGS = -O0 -g -DBE_DEBUG
 TEST_FLAGS  = $(DEBUG_FLAGS) --coverage -fno-omit-frame-pointer -fsanitize=address -fsanitize=undefined
 LIBS        = -lm
 TARGET      = berry
-CC          = gcc
+CC          = clang # install clang!! gcc seems to produce a defect berry binary
 MKDIR       = mkdir
 LFLAGS      =