diff --git a/package/brotli/brotli.mk b/package/brotli/brotli.mk
index 43c8524c0b..ac49fe664f 100644
--- a/package/brotli/brotli.mk
+++ b/package/brotli/brotli.mk
@@ -21,6 +21,12 @@ ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
 BROTLI_CFLAGS += -O0
 endif
 
+# Workaround "Error: value -1234 out of range" assembler issues
+# when building with optimizations.
+ifeq ($(BR2_m68k),y)
+BROTLI_CFLAGS += -Os
+endif
+
 BROTLI_CONF_OPTS += -DCMAKE_C_FLAGS="$(BROTLI_CFLAGS)"
 
 $(eval $(cmake-package))