diff --git a/src/blackmisc/pq/measurementunit.h b/src/blackmisc/pq/measurementunit.h
index 75bfa610f..ba6f9cfbc 100644
--- a/src/blackmisc/pq/measurementunit.h
+++ b/src/blackmisc/pq/measurementunit.h
@@ -198,7 +198,7 @@ namespace BlackMisc
             template <int Subfactor>
             struct InEachHundred
             {
-                static double fraction() { return 100.0f; } //!< fraction
+                static double fraction() { return 100.0; } //!< fraction
                 static double subfactor() { return float(Subfactor); } //!< subfactor
             };
             //! @}