diff --git a/lib/kwineffects.h b/lib/kwineffects.h
index 36e7e2c9d4..df547a96cb 100644
--- a/lib/kwineffects.h
+++ b/lib/kwineffects.h
@@ -170,7 +170,7 @@ X-KDE-Library=kwin4_effect_cooleffect
 
 #define KWIN_EFFECT_API_MAKE_VERSION( major, minor ) (( major ) << 8 | ( minor ))
 #define KWIN_EFFECT_API_VERSION_MAJOR 0
-#define KWIN_EFFECT_API_VERSION_MINOR 101
+#define KWIN_EFFECT_API_VERSION_MINOR 102
 #define KWIN_EFFECT_API_VERSION KWIN_EFFECT_API_MAKE_VERSION( \
     KWIN_EFFECT_API_VERSION_MAJOR, KWIN_EFFECT_API_VERSION_MINOR )
 
@@ -1282,7 +1282,7 @@ class KWIN_EXPORT TimeLine
          * For small animations, values around 150 milliseconds are sensible.
          * Note that duration 0 is not valid.
          */
-        explicit TimeLine(int duration = 0);
+        explicit TimeLine(const int duration = 0);
 
         /**
          * Creates a copy of the TimeLine so we can have the state copied