diff --git a/src/screenshot.cpp b/src/screenshot.cpp
--- a/src/screenshot.cpp
+++ b/src/screenshot.cpp
@@ -584,7 +584,7 @@ void InitializeScreenshotFormats()
 {
 	uint j = 0;
 	for (uint i = 0; i < lengthof(_screenshot_formats); i++) {
-		if (_screenshot_format_name.compare(_screenshot_formats[i].extension) != 0) {
+		if (_screenshot_format_name.compare(_screenshot_formats[i].extension) == 0) {
 			j = i;
 			break;
 		}