diff --git a/epan/dissectors/packet-dcerpc-nt.c b/epan/dissectors/packet-dcerpc-nt.c
index 745e8978cc..d1a060b0a8 100644
--- a/epan/dissectors/packet-dcerpc-nt.c
+++ b/epan/dissectors/packet-dcerpc-nt.c
@@ -1261,7 +1261,7 @@ void cb_wstr_postprocess(packet_info *pinfo, proto_tree *tree _U_,
 	/* Save string to dcv->private_data */
 	if (options & CB_STR_SAVE) {
 		dcerpc_call_value *dcv = (dcerpc_call_value *)di->call_data;
-		dcv->private_data = s;
+		dcv->private_data = wmem_strdup(wmem_file_scope(), s);
 	}
 }
 
@@ -1324,7 +1324,7 @@ void cb_str_postprocess(packet_info *pinfo, proto_tree *tree _U_,
 	if (options & CB_STR_SAVE) {
 		dcerpc_call_value *dcv = (dcerpc_call_value *)di->call_data;
 
-		dcv->private_data = s;
+		dcv->private_data = wmem_strdup(wmem_file_scope(), s);
 	}
 }
 
diff --git a/epan/dissectors/packet-dcerpc-spoolss.c b/epan/dissectors/packet-dcerpc-spoolss.c
index c44db46d51..62d92825ea 100644
--- a/epan/dissectors/packet-dcerpc-spoolss.c
+++ b/epan/dissectors/packet-dcerpc-spoolss.c
@@ -627,7 +627,7 @@ dissect_SYSTEM_TIME_ptr(tvbuff_t *tvb, int offset, packet_info *pinfo,
 
 	offset =  dissect_SYSTEM_TIME(
 		tvb, offset, pinfo, tree, di, drep, NULL, FALSE, &str);
-	dcv->private_data = str;
+	dcv->private_data = wmem_strdup(wmem_file_scope(), str);
 
 	return offset;
 }