diff --git a/configure b/configure
index 5c90ef2fd0..68c580d31f 100755
--- a/configure
+++ b/configure
@@ -18302,7 +18302,7 @@ INCLUDES="-I\${top_builddir}/lib/wx/include/${TOOLCHAIN_NAME} -I\${top_srcdir}/i
 $REGEX_INCLUDE $ZLIB_INCLUDE $PNG_INCLUDE $JPEG_INCLUDE $TIFF_INCLUDE \
 $FREETYPE_INCLUDE $TOOLKIT_INCLUDE"
 
-if test $wxUSE_GTK = 1; then
+if test "$wxUSE_GTK" = 1; then
     WXCONFIG_INCLUDE=
 else
     WXCONFIG_INCLUDE="$TOOLKIT_INCLUDE"
diff --git a/configure.in b/configure.in
index 8737f5db0b..c9dd14497a 100644
--- a/configure.in
+++ b/configure.in
@@ -4658,7 +4658,7 @@ $REGEX_INCLUDE $ZLIB_INCLUDE $PNG_INCLUDE $JPEG_INCLUDE $TIFF_INCLUDE \
 $FREETYPE_INCLUDE $TOOLKIT_INCLUDE"
 
 dnl wxGTK does not need TOOLKIT includes in wx-config
-if test $wxUSE_GTK = 1; then
+if test "$wxUSE_GTK" = 1; then
     WXCONFIG_INCLUDE=
 else
     WXCONFIG_INCLUDE="$TOOLKIT_INCLUDE"