diff --git a/src/m_argv.c b/src/m_argv.c
index a23f938a..e1046f8a 100644
--- a/src/m_argv.c
+++ b/src/m_argv.c
@@ -16,6 +16,7 @@
 #include "doomdef.h"
 #include "command.h"
 #include "m_argv.h"
+#include "m_misc.h"
 
 /**	\brief number of arg
 */
diff --git a/src/m_misc.c b/src/m_misc.c
index b83d4034..a8c55be5 100644
--- a/src/m_misc.c
+++ b/src/m_misc.c
@@ -23,6 +23,8 @@
 #include <unistd.h>
 #endif
 
+#include <errno.h>
+
 // Extended map support.
 #include <ctype.h>