diff --git a/src/dialogs/alignmentarray.h b/src/dialogs/alignmentarray.h
index fcdd494d66..197b3eb245 100644
--- a/src/dialogs/alignmentarray.h
+++ b/src/dialogs/alignmentarray.h
@@ -22,7 +22,7 @@
 
 #include <QMutex>
 
-#include <complex.h>
+#include <complex>
 #include <fftw3.h>
 #include <vector>