diff --git a/engine.c b/engine.c
index fc0b35c850..9ca53aa051 100644
--- a/engine.c
+++ b/engine.c
@@ -450,13 +450,9 @@ bool IsEngineBuildable(uint engine, byte type)
  * Engine Replacement stuff
  ************************************************************************/
 
-static void EngineRenewPoolNewBlock(uint start_item); /* Forward declare for initializer of _engine_renew_pool */
-enum {
-	ENGINE_RENEW_POOL_BLOCK_SIZE_BITS = 3,
-	ENGINE_RENEW_POOL_MAX_BLOCKS      = 8000,
-};
+static void EngineRenewPoolNewBlock(uint start_item);
 
-MemoryPool _engine_renew_pool = { "EngineRe", ENGINE_RENEW_POOL_MAX_BLOCKS, ENGINE_RENEW_POOL_BLOCK_SIZE_BITS, sizeof(EngineRenew), &EngineRenewPoolNewBlock, NULL, 0, 0, NULL };
+DEFINE_POOL(EngineRenew, EngineRenew, EngineRenewPoolNewBlock, NULL)
 
 static void EngineRenewPoolNewBlock(uint start_item)
 {
@@ -464,7 +460,7 @@ static void EngineRenewPoolNewBlock(uint start_item)
 
 	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
 	 *  TODO - This is just a temporary stage, this will be removed. */
-	for (er = GetEngineRenew(start_item); er != NULL; er = (er->index + 1 < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1) : NULL) {
+	for (er = GetEngineRenew(start_item); er != NULL; er = (er->index + 1U < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1U) : NULL) {
 		er->index = start_item++;
 		er->from = INVALID_ENGINE;
 	}
@@ -477,7 +473,7 @@ static EngineRenew *AllocateEngineRenew(void)
 
 	/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
 	 *  TODO - This is just a temporary stage, this will be removed. */
-	for (er = GetEngineRenew(0); er != NULL; er = (er->index + 1 < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1) : NULL) {
+	for (er = GetEngineRenew(0); er != NULL; er = (er->index + 1U < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1U) : NULL) {
 		if (IsValidEngineRenew(er)) continue;
 
 		er->to = INVALID_ENGINE;
@@ -486,7 +482,7 @@ static EngineRenew *AllocateEngineRenew(void)
 	}
 
 	/* Check if we can add a block to the pool */
-	if (AddBlockToPool(&_engine_renew_pool)) return AllocateEngineRenew();
+	if (AddBlockToPool(&_EngineRenew_pool)) return AllocateEngineRenew();
 
 	return NULL;
 }
@@ -603,7 +599,7 @@ static void Load_ERNW(void)
 	while ((index = SlIterateArray()) != -1) {
 		EngineRenew *er;
 
-		if (!AddBlockIfNeeded(&_engine_renew_pool, index))
+		if (!AddBlockIfNeeded(&_EngineRenew_pool, index))
 			error("EngineRenews: failed loading savegame: too many EngineRenews");
 
 		er = GetEngineRenew(index);
@@ -670,6 +666,6 @@ const ChunkHandler _engine_chunk_handlers[] = {
 void InitializeEngines(void)
 {
 	/* Clean the engine renew pool and create 1 block in it */
-	CleanPool(&_engine_renew_pool);
-	AddBlockToPool(&_engine_renew_pool);
+	CleanPool(&_EngineRenew_pool);
+	AddBlockToPool(&_EngineRenew_pool);
 }
diff --git a/engine.h b/engine.h
index 0847bd4245..0440dcc4f2 100644
--- a/engine.h
+++ b/engine.h
@@ -236,15 +236,7 @@ typedef struct EngineRenew EngineRenew;
  * placed here so the only exception to this rule, the saveload code, can use
  * it.
  */
-extern MemoryPool _engine_renew_pool;
-
-/**
- * Get the current size of the EngineRenewPool
- */
-static inline uint16 GetEngineRenewPoolSize(void)
-{
-	return _engine_renew_pool.total_items;
-}
+DECLARE_POOL(EngineRenew, EngineRenew, 3, 8000)
 
 /**
  * Check if a EngineRenew really exists.
@@ -259,19 +251,9 @@ static inline void DeleteEngineRenew(EngineRenew *er)
 	er->from = INVALID_ENGINE;
 }
 
-#define FOR_ALL_ENGINE_RENEWS_FROM(er, start) for (er = GetEngineRenew(start); er != NULL; er = (er->index + 1 < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1) : NULL) if (er->from != INVALID_ENGINE) if (IsValidEngineRenew(er))
+#define FOR_ALL_ENGINE_RENEWS_FROM(er, start) for (er = GetEngineRenew(start); er != NULL; er = (er->index + 1U < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1U) : NULL) if (er->from != INVALID_ENGINE) if (IsValidEngineRenew(er))
 #define FOR_ALL_ENGINE_RENEWS(er) FOR_ALL_ENGINE_RENEWS_FROM(er, 0)
 
-/**
- * DO NOT USE outside of engine.c. Is
- * placed here so the only exception to this rule, the saveload code, can use
- * it.
- */
-static inline EngineRenew *GetEngineRenew(uint16 index)
-{
-	return (EngineRenew*)GetItemFromPool(&_engine_renew_pool, index);
-}
-
 
 /**
  * A list to group EngineRenew directives together (such as per-player).
diff --git a/saveload.c b/saveload.c
index a1bea9dd47..f728f60248 100644
--- a/saveload.c
+++ b/saveload.c
@@ -1273,7 +1273,7 @@ static void *IntToReference(uint index, SLRefType rt)
 			return GetRoadStop(index);
 		}
 		case REF_ENGINE_RENEWS: {
-			if (!AddBlockIfNeeded(&_engine_renew_pool, index))
+			if (!AddBlockIfNeeded(&_EngineRenew_pool, index))
 				error("EngineRenews: failed loading savegame: too many EngineRenews");
 			return GetEngineRenew(index);
 		}