1 files changed, 1 insertions, 1 deletions

diff --git a/src/GenericTool.cc b/src/GenericTool.cc
index 67d737f..41388ce 100644
--- a/src/GenericTool.cc
+++ b/src/GenericTool.cc
@@ -75,7 +75,7 @@ unsigned int GenericTool::borderWidth() const {
     return m_window->borderWidth();
 }
 
-void GenericTool::renderTheme(unsigned char alpha) {
+void GenericTool::renderTheme(int alpha) {
     m_window->setAlpha(alpha);
     m_window->clear();
 }