diff --git a/library/dhm.c b/library/dhm.c
index a7b275f..60e955a 100644
--- a/library/dhm.c
+++ b/library/dhm.c
@@ -49,6 +49,7 @@
 #include "polarssl/platform.h"
 #else
 #include <stdlib.h>
+#include <stdio.h>
 #define polarssl_printf     printf
 #define polarssl_malloc     malloc
 #define polarssl_free       free
diff --git a/library/ecp.c b/library/ecp.c
index 298c964..26ce962 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -57,6 +57,7 @@
 #include "polarssl/platform.h"
 #else
 #include <stdlib.h>
+#include <stdio.h>
 #define polarssl_printf     printf
 #define polarssl_malloc     malloc
 #define polarssl_free       free
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 868d648..b525c3a 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -134,7 +134,8 @@
 CC=gcc CFLAGS=-Werror make
 
 # this is meant to cath missing #define polarssl_printf etc
-msg "build: full config except platform.c" # ~ 30s
+# disable fsio to catch some more missing #include <stdio.h>
+msg "build: full config except platform/fsio" # ~ 30s
 cleanup
 cp "$CONFIG_H" "$CONFIG_BAK"
 scripts/config.pl full
@@ -142,6 +143,7 @@
 scripts/config.pl unset POLARSSL_PLATFORM_MEMORY
 scripts/config.pl unset POLARSSL_MEMORY_C
 scripts/config.pl unset POLARSSL_MEMORY_BUFFER_ALLOC_C
+scripts/config.pl unset POLARSSL_FS_IO
 CC=gcc CFLAGS=-Werror make
 
 if uname -a | grep -F x86_64 >/dev/null; then