diff --git a/pkg/jerryscript/Makefile b/pkg/jerryscript/Makefile
index 94c84b063d..d7d3210cc9 100644
--- a/pkg/jerryscript/Makefile
+++ b/pkg/jerryscript/Makefile
@@ -12,6 +12,7 @@ JERRY_GC_LIMIT ?= 0  # Use default value, e.g. 1/32 of total heap size
 JERRY_GC_MARK_LIMIT ?= 8  # maximum recursion depth during GC mark phase
 
 EXT_CFLAGS := -D__TARGET_RIOT
+CFLAGS += -Wno-cast-align
 
 # disable warnings when compiling with LLVM for board native
 ifeq ($(TOOLCHAIN)_$(BOARD),llvm_native)