diff --git a/w2v-server.pl b/w2v-server.pl
index 2c57554..2faeb94 100755
--- a/w2v-server.pl
+++ b/w2v-server.pl
@@ -604,6 +604,7 @@
 void *getCollocators(void *args) {
   knnpars *pars = args;
 	int N = pars->N;
+
   int cc = pars->wl->wordi[0];
 	knn *nbs = NULL;
   long window_layer_size = size * window * 2;
@@ -916,7 +917,7 @@
   int para_threads = (no_similar_profiles? 0 : num_threads - syn_threads);
 
   collocator *best;
-  posix_memalign((void **) &best, 128, 10 * N * sizeof(collocator));
+  posix_memalign((void **) &best, 128, 10 * (N>=100? N : 100)  * sizeof(collocator));
   memset(best, 0, 10 * N * sizeof(collocator));
 
   if(N>MAX_NEIGHBOURS) N=MAX_NEIGHBOURS;