diff --git a/package/assimp/assimp.mk b/package/assimp/assimp.mk
index 4d447487ba..1316720423 100644
--- a/package/assimp/assimp.mk
+++ b/package/assimp/assimp.mk
@@ -19,7 +19,7 @@ endif
 # workaround SuperH compiler failure when static linking (i.e -fPIC is
 # not passed) in gcc versions 5.x or older. The -Os optimization level
 # causes a "unable to find a register to spill in class
-# ‘GENERAL_REGS’" error. -O2 works fine.
+# 'GENERAL_REGS'" error. -O2 works fine.
 ifeq ($(BR2_sh):$(BR2_STATIC_LIBS):$(BR2_TOOLCHAIN_GCC_AT_LEAST_6),y:y:)
 ASSIMP_CXXFLAGS += -O2
 endif