diff --git a/ipl_tools/proc.c b/ipl_tools/proc.c
index f9428a0c..fae840d5 100644
--- a/ipl_tools/proc.c
+++ b/ipl_tools/proc.c
@@ -16,6 +16,7 @@
 #include <sys/stat.h>
 #include <sys/sysmacros.h>
 #include <unistd.h>
+#include <ctype.h>
 
 #include "ipl_tools.h"
 #include "proc.h"
diff --git a/ipl_tools/proc.h b/ipl_tools/proc.h
index 8ae108f5..ae275c6d 100644
--- a/ipl_tools/proc.h
+++ b/ipl_tools/proc.h
@@ -12,7 +12,6 @@
 #ifndef PROC_H
 #define PROC_H
 
-#include <ctype.h>
 #include <sys/types.h>
 
 struct proc_part_entry {