diff --git a/src/libosmo-mgcp-client/mgcp_client.c b/src/libosmo-mgcp-client/mgcp_client.c
index de940c0..e054593 100644
--- a/src/libosmo-mgcp-client/mgcp_client.c
+++ b/src/libosmo-mgcp-client/mgcp_client.c
@@ -262,7 +262,7 @@
 
 	/* Find beginning of the parameter (SDP) section */
 	data_ptr = mgcp_find_section_end(data);
-	if (!data) {
+	if (!data_ptr) {
 		LOGP(DLMGCP, LOGL_ERROR,
 		     "MGCP response: cannot find start of SDP parameters\n");
 		rc = -EINVAL;