diff --git a/docs/examples/opensslthreadlock.c b/docs/examples/opensslthreadlock.c
index eebc42e..6f86c7f 100644
--- a/docs/examples/opensslthreadlock.c
+++ b/docs/examples/opensslthreadlock.c
@@ -52,7 +52,7 @@
 /* This array will store all of the mutexes available to OpenSSL. */
 static MUTEX_TYPE *mutex_buf= NULL;
 
-static void locking_function(int mode, int n, const char * file, int line)
+static void locking_function(int mode, int n, const char *file, int line)
 {
   if(mode & CRYPTO_LOCK)
     MUTEX_LOCK(mutex_buf[n]);