diff --git a/src/classes/PRgeHandler.cpp b/src/classes/PRgeHandler.cpp
index 1cb37515a..e1b8f87e9 100644
--- a/src/classes/PRgeHandler.cpp
+++ b/src/classes/PRgeHandler.cpp
@@ -32,6 +32,7 @@
 #include <vector>
 #include <string>
 #include <memory>
+#include <cmath>
 
 #include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
diff --git a/src/external/Nonlocal/prog/dump_nonlocal_field.cpp b/src/external/Nonlocal/prog/dump_nonlocal_field.cpp
index 254e7841a..b43534264 100644
--- a/src/external/Nonlocal/prog/dump_nonlocal_field.cpp
+++ b/src/external/Nonlocal/prog/dump_nonlocal_field.cpp
@@ -33,6 +33,7 @@
 #include <vector>
 #include <map>
 #include <cstring>
+#include <cmath>
 
 #include <boost/algorithm/string.hpp>
 
diff --git a/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp b/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
index e275c4916..6d88df103 100644
--- a/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
+++ b/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
@@ -53,6 +53,7 @@
 #include <cstdlib>
 #include <iostream>
 #include <fstream>
+#include <cmath>
 
 #include <TColor.h>
 #include <TROOT.h>