diff --git a/programs/test/ssl_test.c b/programs/test/ssl_test.c
index 9d06bd1..32ea1c1 100644
--- a/programs/test/ssl_test.c
+++ b/programs/test/ssl_test.c
@@ -127,8 +127,8 @@
     int client_fd;
     int bytes_to_read;
     int bytes_to_write;
-    int offset_to_read;
-    int offset_to_write;
+    int offset_to_read = 0;
+    int offset_to_write = 0;
 
     long int nb_read;
     long int nb_written;
@@ -136,8 +136,8 @@
     unsigned long read_state[5];
     unsigned long write_state[5];
 
-    unsigned char *read_buf;
-    unsigned char *write_buf;
+    unsigned char *read_buf = NULL;
+    unsigned char *write_buf = NULL;
 
     struct hr_time t;
     havege_state hs;