diff --git a/src/dirnode.cpp b/src/dirnode.cpp
index c3128348..1fd8f2aa 100644
--- a/src/dirnode.cpp
+++ b/src/dirnode.cpp
@@ -582,7 +582,7 @@ void RDirNode::calcRadius() {
     //this->dir_radius_sqrt = sqrt(dir_radius); //dir_radius_sqrt is not used
 
 //    this->parent_radius = std::max(1.0, parent_circ / PI);
-    this->parent_radius = std::max(1.0, sqrt(total_file_area) * gGourceDirPadding);
+    this->parent_radius = std::max(1.0f, sqrt(total_file_area) * gGourceDirPadding);
 }
 
 float RDirNode::distanceToParent() const{