diff --git a/pglab/QueryExplainModel.cpp b/pglab/QueryExplainModel.cpp
index 019ad7c..212e750 100644
--- a/pglab/QueryExplainModel.cpp
+++ b/pglab/QueryExplainModel.cpp
@@ -64,12 +64,12 @@ if (role == Qt::DisplayRole) {
 			if (col == c_ColumnExclusive || col == c_ColumnInclusive) {
 				float t = col == 1 ? item->exclusiveTime() : item->inclusiveTime();
 				float tt = explain->plan->inclusiveTime();
-				if (tt > 0.000000001) {
+				if (tt > 0.000000001f) {
 					float f = t / tt;
-					if (f > 0.9) {
+					if (f > 0.9f) {
 						result = QColor(255, 192, 192);
 					}
-					else if (f > 0.63) {
+					else if (f > 0.63f) {
 						result = QColor(255, 224, 192);
 					}
 					else if (f > 0.36f) {