diff --git a/pwmfan.cpp b/pwmfan.cpp
index fb7328c..ee5a8fb 100644
--- a/pwmfan.cpp
+++ b/pwmfan.cpp
@@ -60,11 +60,10 @@ float calcPower(int temperature) {
 	if (temperature > T_MAX) {
         value = 1.0f;
     }
-    if !(INVERT_CONTROL_CURVE) {
-        return value;
-    }
-    else {
+    if INVERT_CONTROL_CURVE {
         return (1.0f-value);
+    } else {
+        return value;
     }    
 }