diff --git a/package/gstreamer1/gst1-plugins-bad/gst1-plugins-bad.mk b/package/gstreamer1/gst1-plugins-bad/gst1-plugins-bad.mk
index 9f7cd9777e..b001c33592 100644
--- a/package/gstreamer1/gst1-plugins-bad/gst1-plugins-bad.mk
+++ b/package/gstreamer1/gst1-plugins-bad/gst1-plugins-bad.mk
@@ -11,7 +11,7 @@ GST1_PLUGINS_BAD_INSTALL_STAGING = YES
 # Unknown and GPL licensed plugins will append to GST1_PLUGINS_BAD_LICENSE and
 # GST1_PLUGINS_BAD_LICENSE_FILES if enabled.
 GST1_PLUGINS_BAD_LICENSE_FILES = COPYING.LIB
-GST1_PLUGINS_BAD_LICENSE = LGPL-2.0+, LGPL-2.1+
+GST1_PLUGINS_BAD_LICENSE := LGPL-2.0+, LGPL-2.1+
 
 GST1_PLUGINS_BAD_CONF_OPTS = \
 	--disable-examples \
@@ -771,13 +771,13 @@ endif
 
 # Add GPL license if GPL licensed plugins enabled.
 ifeq ($(GST1_PLUGINS_BAD_HAS_GPL_LICENSE),y)
-GST1_PLUGINS_BAD_LICENSE += GPL
+GST1_PLUGINS_BAD_LICENSE := $(GST1_PLUGINS_BAD_LICENSE), GPL
 GST1_PLUGINS_BAD_LICENSE_FILES += COPYING
 endif
 
 # Add Unknown license if Unknown licensed plugins enabled.
 ifeq ($(GST1_PLUGINS_BAD_HAS_UNKNOWN_LICENSE),y)
-GST1_PLUGINS_BAD_LICENSE += UNKNOWN
+GST1_PLUGINS_BAD_LICENSE := $(GST1_PLUGINS_BAD_LICENSE), UNKNOWN
 endif
 
 # Use the following command to extract license info for plugins.