diff --git a/src/pair_hybrid.cpp b/src/pair_hybrid.cpp
index 41c90942b7..07206dc518 100644
--- a/src/pair_hybrid.cpp
+++ b/src/pair_hybrid.cpp
@@ -416,10 +416,10 @@ void PairHybrid::flags()
 
   for (m = 0; m < nstyles; m++) {
     if (styles[m]->centroidstressflag == CENTROID_NOTAVAIL)
-      centroidstressflag == CENTROID_NOTAVAIL;
+      centroidstressflag = CENTROID_NOTAVAIL;
     if (centroidstressflag == CENTROID_SAME &&
 	styles[m]->centroidstressflag == CENTROID_AVAIL)
-      centroidstressflag == CENTROID_AVAIL;
+      centroidstressflag = CENTROID_AVAIL;
   }
 }