diff --git a/lib/api/src/externals.rs b/lib/api/src/externals.rs
index 18629f329..5e684247d 100644
--- a/lib/api/src/externals.rs
+++ b/lib/api/src/externals.rs
@@ -231,7 +231,9 @@ fn set_table_item(
 impl Table {
     pub fn new(store: &Store, ty: TableType, init: Val) -> Result<Table, RuntimeError> {
         let item = init.into_checked_anyfunc(store)?;
-        let table = store.engine().tunables().create_table(ty);
+        let tunables = store.engine().tunables();
+        let table_plan = tunables.table_plan(ty);
+        let table = tunables.create_table(table_plan);
 
         let definition = table.vmtable();
         for i in 0..definition.current_elements {
@@ -345,7 +347,10 @@ pub struct Memory {
 
 impl Memory {
     pub fn new(store: &Store, ty: MemoryType) -> Memory {
-        let memory = store.engine().tunables().create_memory(ty).unwrap();
+        let tunables = store.engine().tunables();
+        let memory_plan = tunables.memory_plan(ty);
+        let memory = tunables.create_memory(memory_plan).unwrap();
+
         let definition = memory.vmmemory();
 
         Memory {
diff --git a/lib/api/src/tunables.rs b/lib/api/src/tunables.rs
index 1e73824ec..3f948dbed 100644
--- a/lib/api/src/tunables.rs
+++ b/lib/api/src/tunables.rs
@@ -92,14 +92,12 @@ impl wasmer_jit::Tunables for Tunables {
     }
 
     /// Create a memory given a memory type
-    fn create_memory(&self, memory_type: MemoryType) -> Result<LinearMemory, String> {
-        let plan = self.memory_plan(memory_type);
+    fn create_memory(&self, plan: MemoryPlan) -> Result<LinearMemory, String> {
         LinearMemory::new(&plan)
     }
 
     /// Create a memory given a memory type
-    fn create_table(&self, table_type: TableType) -> Table {
-        let plan = self.table_plan(table_type);
+    fn create_table(&self, plan: TablePlan) -> Table {
         Table::new(&plan)
     }
 }
diff --git a/lib/jit/src/tunables.rs b/lib/jit/src/tunables.rs
index 0f5408ef7..d31787e77 100644
--- a/lib/jit/src/tunables.rs
+++ b/lib/jit/src/tunables.rs
@@ -11,8 +11,8 @@ pub trait Tunables {
     fn table_plan(&self, table: TableType) -> TablePlan;
 
     /// Create a memory given a memory type
-    fn create_memory(&self, memory_type: MemoryType) -> Result<LinearMemory, String>;
+    fn create_memory(&self, memory_type: MemoryPlan) -> Result<LinearMemory, String>;
 
     /// Create a memory given a memory type
-    fn create_table(&self, table_type: TableType) -> Table;
+    fn create_table(&self, table_type: TablePlan) -> Table;
 }