Fix printf specifier
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index 9117bb0..aa3a2c2 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -397,7 +397,7 @@
} \
} else { \
mbedtls_printf( "Padding checks only implemented for types of size 2, 4 or 8" \
- " - cannot check type '" #TYPE "' of size %ld\n", \
+ " - cannot check type '" #TYPE "' of size %zu\n", \
sizeof( TYPE ) ); \
mbedtls_exit( MBEDTLS_EXIT_FAILURE ); \
} \