diff --git a/com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/ipa/callgraph/PythonSSAPropagationCallGraphBuilder.java b/com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/ipa/callgraph/PythonSSAPropagationCallGraphBuilder.java
index 5e80fcd22..e6947b1ab 100644
--- a/com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/ipa/callgraph/PythonSSAPropagationCallGraphBuilder.java
+++ b/com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/ipa/callgraph/PythonSSAPropagationCallGraphBuilder.java
@@ -230,7 +230,9 @@ protected void processCallingConstraints(
               InstanceKey instanceKey = this.getSystem().getInstanceKey(instanceKeyIndex);
               this.getSystem().newConstraint(lval, instanceKey);
             }
-          } else getSystem().newConstraint(lval, assignOperator, rval);
+          } else {
+            getSystem().newConstraint(lval, assignOperator, rval);
+          }
         }
       }