diff --git a/configure.ac b/configure.ac
index 63173f3ec4..0ab482d311 100644
--- a/configure.ac
+++ b/configure.ac
@@ -587,7 +587,7 @@ dnl *** dc1394  ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_DC1394, true)
 AG_GST_CHECK_FEATURE(DC1394, [libdc1394], dc1394, [
    PKG_CHECK_MODULES(LIBDC1394, libdc1394-2 >= 2.0.0, [
-   	if test -z "`pkg-config --modversion libdc1394-2 | grep 2.0.0-rc`"; then
+   	if test -z "`$PKG_CONFIG --modversion libdc1394-2 | grep 2.0.0-rc`"; then
 		HAVE_DC1394="yes"
 	else
 		HAVE_DC1394="no"