diff --git a/libretroshare/src/pqi/pqihandler.cc b/libretroshare/src/pqi/pqihandler.cc
index dd491d587..739563234 100644
--- a/libretroshare/src/pqi/pqihandler.cc
+++ b/libretroshare/src/pqi/pqihandler.cc
@@ -477,19 +477,19 @@ int     pqihandler::UpdateRates()
 
 	std::map<RsPeerId, SearchModule *>::iterator it;
 
-	int num_sm = mods.size();
-
 	float avail_in = getMaxRate(true);
 	float avail_out = getMaxRate(false);
 
 	float used_bw_in = 0;
 	float used_bw_out = 0;
-	float used_bw_in_table[num_sm];         /* table of in bandwidth currently used by each module */
-	float used_bw_out_table[num_sm];        /* table of out bandwidth currently used by each module */
 
 	/* Lock once rates have been retrieved */
 	RsStackMutex stack(coreMtx); /**************** LOCKED MUTEX ****************/
 
+	int num_sm = mods.size();
+	float used_bw_in_table[num_sm];         /* table of in bandwidth currently used by each module */
+	float used_bw_out_table[num_sm];        /* table of out bandwidth currently used by each module */
+
 	int effectiveUploadsSm = 0;
 	int effectiveDownloadsSm = 0;