diff --git a/Source/Model/Writer/v100/NMR_ModelWriterNode100_Mesh.cpp b/Source/Model/Writer/v100/NMR_ModelWriterNode100_Mesh.cpp
index e231329b3..1889288d9 100644
--- a/Source/Model/Writer/v100/NMR_ModelWriterNode100_Mesh.cpp
+++ b/Source/Model/Writer/v100/NMR_ModelWriterNode100_Mesh.cpp
@@ -79,7 +79,7 @@ namespace NMR {
 		putBallRefString(MODELWRITERMESH100_BEAMLATTICE_BALLREFLINESTART);
 	}
 
-	bool stringRepresentationsDiffer(double a, double b, double putFactor) {
+	bool stringRepresentationsDiffer(double a, double b, nfInt64 putFactor) {
 		return  fabs(a - b) * putFactor > 0.1;
 	}