diff --git a/image_analysis/IndexAndRefine.h b/image_analysis/IndexAndRefine.h
index fe1ea0cd..ad1734f5 100644
--- a/image_analysis/IndexAndRefine.h
+++ b/image_analysis/IndexAndRefine.h
@@ -1,7 +1,7 @@
 // SPDX-FileCopyrightText: 2025 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
 // SPDX-License-Identifier: GPL-3.0-only
 
-#pragme once
+#pragma once
 
 #include <vector>
 #include <mutex>