diff --git a/src/BulletSoftBody/btSoftBody.h b/src/BulletSoftBody/btSoftBody.h
index 27705e6009..961f45a9fe 100644
--- a/src/BulletSoftBody/btSoftBody.h
+++ b/src/BulletSoftBody/btSoftBody.h
@@ -35,7 +35,7 @@ subject to the following restrictions:
 //#else
 #define btSoftBodyData btSoftBodyFloatData
 #define btSoftBodyDataName "btSoftBodyFloatData"
-static const btScalar OVERLAP_REDUCTION_FACTOR = 0.1;
+static const btScalar OVERLAP_REDUCTION_FACTOR = 0.1f;
 static unsigned long seed = 243703;
 //#endif //BT_USE_DOUBLE_PRECISION