diff --git a/rtengine/sleef.c b/rtengine/sleef.c
old mode 100644
new mode 100755
index 1f9452768..d540b2f2c
--- a/rtengine/sleef.c
+++ b/rtengine/sleef.c
@@ -75,7 +75,7 @@ __inline int ilogbp1(double d) {
 
 __inline int xilogb(double d) {
   int e = ilogbp1(xfabs(d)) - 1;
-  e = d == 0 ? -2147483648.0 : e;
+  e = d == 0 ? -2147483648 : e;
   e = d == INFINITY || d == -INFINITY ? 2147483647 : e;
   return e;
 }