diff --git a/plugins/profinet/packet-dcom-cba.c b/plugins/profinet/packet-dcom-cba.c
index 967b8e6..cbb628c 100644
--- a/plugins/profinet/packet-dcom-cba.c
+++ b/plugins/profinet/packet-dcom-cba.c
@@ -553,7 +553,7 @@ dissect_ICBAPhysicalDevice_get_LogicalDevice_rqst(tvbuff_t *tvb, int offset,
     packet_info *pinfo, proto_tree *tree, guint8 *drep)
 {
     guint32      u32Pointer;
-    gchar        szStr[1000];
+    gchar        szStr[1000] = "";
     guint32      u32MaxStr = sizeof(szStr);
     dcerpc_info *info      = (dcerpc_info *) pinfo->private_data;
     gchar       *call;