diff --git a/sshrand.c b/sshrand.c
index b79fafc0..ad93576e 100644
--- a/sshrand.c
+++ b/sshrand.c
@@ -4,6 +4,7 @@
 
 #include "putty.h"
 #include "ssh.h"
+#include "storage.h"
 #include <assert.h>
 
 /* Collect environmental noise every 5 minutes */
@@ -78,6 +79,18 @@ static void random_create(const ssh_hashalg *hashalg)
     random_save_seed();
 }
 
+void random_save_seed(void)
+{
+    int len;
+    void *data;
+
+    if (random_active) {
+	random_get_savedata(&data, &len);
+	write_random_seed(data, len);
+	sfree(data);
+    }
+}
+
 void random_ref(void)
 {
     if (!random_active++)
diff --git a/unix/uxnoise.c b/unix/uxnoise.c
index 24023005..fb6c7c2c 100644
--- a/unix/uxnoise.c
+++ b/unix/uxnoise.c
@@ -84,18 +84,6 @@ void noise_get_heavy(void (*func) (void *, int))
     read_random_seed(func);
 }
 
-void random_save_seed(void)
-{
-    int len;
-    void *data;
-
-    if (random_active) {
-	random_get_savedata(&data, &len);
-	write_random_seed(data, len);
-	sfree(data);
-    }
-}
-
 /*
  * This function is called on a timer, and grabs as much changeable
  * system data as it can quickly get its hands on.
diff --git a/windows/winnoise.c b/windows/winnoise.c
index c4167ddf..842a69b0 100644
--- a/windows/winnoise.c
+++ b/windows/winnoise.c
@@ -75,18 +75,6 @@ void noise_get_heavy(void (*func) (void *, int))
     read_random_seed(func);
 }
 
-void random_save_seed(void)
-{
-    int len;
-    void *data;
-
-    if (random_active) {
-	random_get_savedata(&data, &len);
-	write_random_seed(data, len);
-	sfree(data);
-    }
-}
-
 /*
  * This function is called on a timer, and it will monitor
  * frequently changing quantities such as the state of physical and