diff --git a/src/shell/Readline.cpp b/src/shell/Readline.cpp
index c2d5d5290..b0c1b42bd 100644
--- a/src/shell/Readline.cpp
+++ b/src/shell/Readline.cpp
@@ -28,6 +28,7 @@
 #define L10N                                           // Localization complete.
 
 #include <iostream>
+#include <stdlib.h>
 #include <unistd.h>
 #include <cmake.h>
 #include <Readline.h>
diff --git a/src/shell/main.cpp b/src/shell/main.cpp
index 5dddf62d2..d85dd237b 100644
--- a/src/shell/main.cpp
+++ b/src/shell/main.cpp
@@ -27,6 +27,7 @@
 
 #define L10N                                           // Localization complete.
 
+#include <algorithm>
 #include <fstream>
 #include <iostream>
 #include <cstring>