diff --git a/h_malloc.c b/h_malloc.c
index 54f129a..db32fc2 100644
--- a/h_malloc.c
+++ b/h_malloc.c
@@ -784,15 +784,6 @@ static void regions_quarantine_deallocate_pages(void *p, size_t size, size_t gua
     }
 }
 
-static size_t hash_page(const void *p) {
-    uintptr_t u = (uintptr_t)p >> PAGE_SHIFT;
-    size_t sum = u;
-    sum = (sum << 7) - sum + (u >> 16);
-    sum = (sum << 7) - sum + (u >> 32);
-    sum = (sum << 7) - sum + (u >> 48);
-    return sum;
-}
-
 static int regions_grow(void) {
     struct region_allocator *ra = ro.region_allocator;
 
diff --git a/pages.h b/pages.h
index d91b58d..f0943cb 100644
--- a/pages.h
+++ b/pages.h
@@ -3,6 +3,7 @@
 
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 
 #define PAGE_SHIFT 12
 #ifndef PAGE_SIZE
@@ -14,4 +15,13 @@ void *allocate_pages(size_t usable_size, size_t guard_size, bool unprotect, cons
 void *allocate_pages_aligned(size_t usable_size, size_t alignment, size_t guard_size, const char *name);
 void deallocate_pages(void *usable, size_t usable_size, size_t guard_size);
 
+static inline size_t hash_page(const void *p) {
+    uintptr_t u = (uintptr_t)p >> PAGE_SHIFT;
+    size_t sum = u;
+    sum = (sum << 7) - sum + (u >> 16);
+    sum = (sum << 7) - sum + (u >> 32);
+    sum = (sum << 7) - sum + (u >> 48);
+    return sum;
+}
+
 #endif