7 files changed, 7 insertions, 0 deletions
diff --git a/src/file_asm.c b/src/file_asm.c
index fecf482e..dbfe3d9f 100644
--- a/src/file_asm.c
+++ b/src/file_asm.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "filegen.h"
 
diff --git a/src/file_drw.c b/src/file_drw.c
index a377c079..2a6a3111 100644
--- a/src/file_drw.c
+++ b/src/file_drw.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "filegen.h"
 
diff --git a/src/file_frm.c b/src/file_frm.c
index 826bd8dc..c6baafba 100644
--- a/src/file_frm.c
+++ b/src/file_frm.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "filegen.h"
 
diff --git a/src/file_jpg.c b/src/file_jpg.c
index 27920a21..c1924052 100644
--- a/src/file_jpg.c
+++ b/src/file_jpg.c
@@ -42,6 +42,7 @@
 #include <jpeglib.h>
 #include "suspend.h"
 #endif
+#include <ctype.h>      /* isprint */
 #include "filegen.h"
 #include "common.h"
 #include "log.h"
diff --git a/src/file_pnm.c b/src/file_pnm.c
index 066c37c9..612aa568 100644
--- a/src/file_pnm.c
+++ b/src/file_pnm.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "filegen.h"
 
diff --git a/src/file_tph.c b/src/file_tph.c
index 4aa7de75..99e532fd 100644
--- a/src/file_tph.c
+++ b/src/file_tph.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "filegen.h"
 
diff --git a/src/file_xv.c b/src/file_xv.c
index 9722110a..5b48e208 100644
--- a/src/file_xv.c
+++ b/src/file_xv.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #endif
 #include <stdio.h>
+#include <ctype.h>
 #include "types.h"
 #include "common.h"
 #include "filegen.h"