diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index cca287c753d3..d1df737723c8 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -568,14 +568,14 @@ static Eterm hashmap_from_unsorted_array(ErtsHeapFactory* factory,
 
 	    while(ix < jx) {
 		lx = ix;
-		while(ix < jx && EQ(CAR(list_val(hxns[ix].val)), CAR(list_val(hxns[lx].val)))) {
+		while(++ix < jx && EQ(CAR(list_val(hxns[ix].val)),
+				      CAR(list_val(hxns[lx].val)))) {
                     if (reject_dupkeys)
                         return THE_NON_VALUE;
 
                     if (hxns[ix].i > hxns[lx].i) {
 			lx = ix;
 		    }
-		    ix++;
 		}
 		hxns[cx].hx  = hxns[lx].hx;
 		hxns[cx].val = hxns[lx].val;
@@ -860,7 +860,12 @@ static Eterm hashmap_from_chunked_array(ErtsHeapFactory *factory, hxnode_t *hxns
 #undef HALLOC_EXTRA
 
 static int hxnodecmpkey(hxnode_t *a, hxnode_t *b) {
-    return CMP_TERM(CAR(list_val(a->val)), CAR(list_val(b->val)));
+    Sint c = CMP_TERM(CAR(list_val(a->val)), CAR(list_val(b->val)));
+#if ERTS_SIZEOF_ETERM <= SIZEOF_INT
+    return c;
+#else
+    return c > 0 ? 1 : (c < 0 ? -1 : 0);
+#endif
 }
 
 static int hxnodecmp(hxnode_t *a, hxnode_t *b) {