diff --git a/lib/mm/pool-debug.c b/lib/mm/pool-debug.c
index 9065346ca..dad81af7b 100644
--- a/lib/mm/pool-debug.c
+++ b/lib/mm/pool-debug.c
@@ -195,25 +195,3 @@ void pool_abandon_object(struct pool *p)
 	p->begun = 0;
 	p->object = NULL;
 }
-
-char *pool_strdup(struct pool *p, const char *str)
-{
-	char *ret = pool_alloc(p, strlen(str) + 1);
-
-	if (ret)
-		strcpy(ret, str);
-
-	return ret;
-}
-
-char *pool_strndup(struct pool *p, const char *str, size_t n)
-{
-	char *ret = pool_alloc(p, n + 1);
-
-	if (ret) {
-		strncpy(ret, str, n);
-		ret[n] = '\0';
-	}
-
-	return ret;
-}
diff --git a/lib/mm/pool-fast.c b/lib/mm/pool-fast.c
index 9d40e9391..c2f26e0eb 100644
--- a/lib/mm/pool-fast.c
+++ b/lib/mm/pool-fast.c
@@ -195,28 +195,6 @@ void pool_abandon_object(struct pool *p)
 	p->object_alignment = DEFAULT_ALIGNMENT;
 }
 
-char *pool_strdup(struct pool *p, const char *str)
-{
-	char *ret = pool_alloc(p, strlen(str) + 1);
-
-	if (ret)
-		strcpy(ret, str);
-
-	return ret;
-}
-
-char *pool_strndup(struct pool *p, const char *str, size_t n)
-{
-	char *ret = pool_alloc(p, n + 1);
-
-	if (ret) {
-		strncpy(ret, str, n);
-		ret[n] = '\0';
-	}
-
-	return ret;
-}
-
 void _align_chunk(struct chunk *c, unsigned alignment)
 {
 	c->begin += alignment - ((unsigned long) c->begin & (alignment - 1));
diff --git a/lib/mm/pool.c b/lib/mm/pool.c
index 2cbad670d..bbb77dcc8 100644
--- a/lib/mm/pool.c
+++ b/lib/mm/pool.c
@@ -9,3 +9,35 @@
 #else
 #include "pool-fast.c"
 #endif
+
+char *pool_strdup(struct pool *p, const char *str)
+{
+	char *ret = pool_alloc(p, strlen(str) + 1);
+
+	if (ret)
+		strcpy(ret, str);
+
+	return ret;
+}
+
+char *pool_strndup(struct pool *p, const char *str, size_t n)
+{
+	char *ret = pool_alloc(p, n + 1);
+
+	if (ret) {
+		strncpy(ret, str, n);
+		ret[n] = '\0';
+	}
+
+	return ret;
+}
+
+void *pool_zalloc(struct pool *p, size_t s)
+{
+	void *ptr = pool_alloc(p, s);
+
+	if (ptr)
+		memset(ptr, 0, s);
+
+	return ptr;
+}
diff --git a/lib/mm/pool.h b/lib/mm/pool.h
index 4e82617dc..f3806569e 100644
--- a/lib/mm/pool.h
+++ b/lib/mm/pool.h
@@ -107,15 +107,6 @@ void pool_abandon_object(struct pool *p);
 /* utilities */
 char *pool_strdup(struct pool *p, const char *str);
 char *pool_strndup(struct pool *p, const char *str, size_t n);
-
-static inline void *pool_zalloc(struct pool *p, size_t s)
-{
-	void *ptr = pool_alloc(p, s);
-
-	if (ptr)
-		memset(ptr, 0, s);
-
-	return ptr;
-}
+void *pool_zalloc(struct pool *p, size_t s);
 
 #endif