diff --git a/EXE_Scene.cpp b/EXE_Scene.cpp
index df66bef..53bf3c4 100644
--- a/EXE_Scene.cpp
+++ b/EXE_Scene.cpp
@@ -481,7 +481,7 @@ ExeZoom( int nZoom, bool bRedraw)
    IEGrScene* pScene = GetCurrScene() ;
    VERIFY_SCENE( pScene, false)
 
-   const double COEFF_IN = 0.9 ;
+   const double COEFF_IN = 0.5 ;
    const double COEFF_OUT = 1 / COEFF_IN ;
 
    switch ( nZoom) {