diff --git a/applications/utilities/displacementField/displacementField.C b/applications/utilities/displacementField/displacementField.C
index ad73aaed..25948b61 100644
--- a/applications/utilities/displacementField/displacementField.C
+++ b/applications/utilities/displacementField/displacementField.C
@@ -316,7 +316,7 @@ void readDump(std::string filename, labelList &indices, scalarList &radii, vecto
 
     const label leadingLines = 9;
     label lineCounter = 0;
-    label partIndex;
+    label partIndex = 0;
     scalar r = 1.0, x = 0.0, y = 0.0, z = 0.0;
 
     indices.clear();