diff --git a/src/Akela/Heatmap.cpp b/src/Akela/Heatmap.cpp
index 20f41727..0feed26b 100644
--- a/src/Akela/Heatmap.cpp
+++ b/src/Akela/Heatmap.cpp
@@ -85,7 +85,7 @@ namespace Akela {
       return mappedKey;
 
     // if the key is not toggled on, return.
-    if (key_toggled_on (keyState))
+    if (!key_toggled_on (keyState))
       return mappedKey;
 
     totalKeys++;