diff --git a/package/libglib2/libglib2.mk b/package/libglib2/libglib2.mk
index 28f404b74a..38941ca79d 100644
--- a/package/libglib2/libglib2.mk
+++ b/package/libglib2/libglib2.mk
@@ -12,11 +12,12 @@ LIBGLIB2_LICENSE = LGPL-2.1+
 LIBGLIB2_LICENSE_FILES = COPYING
 LIBGLIB2_INSTALL_STAGING = YES
 
+LIBGLIB2_CFLAGS = $(TARGET_CFLAGS)
 LIBGLIB2_LDFLAGS = $(TARGET_LDFLAGS) $(TARGET_NLS_LIBS)
 
 # glib/valgrind.h contains inline asm not compatible with thumb1
 ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
-LIBGLIB2_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -marm"
+LIBGLIB2_CFLAGS += -marm
 endif
 
 HOST_LIBGLIB2_CONF_OPTS = \