diff --git a/library/md4.c b/library/md4.c
index 82adcd8..6012526 100644
--- a/library/md4.c
+++ b/library/md4.c
@@ -76,7 +76,7 @@
     ctx->state[3] = 0x10325476;
 }
 
-static void md4_process( md4_context *ctx, const unsigned char data[64] )
+void md4_process( md4_context *ctx, const unsigned char data[64] )
 {
     uint32_t X[16], A, B, C, D;