diff --git a/src/rand.c b/src/rand.c
index db61d48..a79e2d9 100644
--- a/src/rand.c
+++ b/src/rand.c
@@ -33,6 +33,11 @@
 #include <fcntl.h>
 #include <unistd.h>
 
+/*
+ * static declarations
+ */
+static mp_digit get_urnd_int_small(int *sign);
+
 
 /**
  * Gets randomly a small integer
@@ -41,7 +46,7 @@
  * @param sign stores the signness [out]
  * @return random small integer
  */
-mp_digit get_urnd_int_small(int *sign)
+static mp_digit get_urnd_int_small(int *sign)
 {
 	int random_data;
 	mp_digit random_int;
diff --git a/src/rand.h b/src/rand.h
index 41206bd..66f2a1b 100644
--- a/src/rand.h
+++ b/src/rand.h
@@ -28,8 +28,6 @@
 #include <tompoly.h>
 
 
-mp_digit get_urnd_int_small(int *sign);
-
 pb_poly *get_urnd_poly_small(pqc_context *ctx);
 
 #endif /* NTRU_RAND_H */