diff --git a/std/assembly/collector/itcm.ts b/std/assembly/collector/itcm.ts
index 61e1ac96..6c12ef48 100644
--- a/std/assembly/collector/itcm.ts
+++ b/std/assembly/collector/itcm.ts
@@ -130,7 +130,7 @@ class ManagedObjectSet extends ManagedObject {
 }
 
 /** Performs a single step according to the current state. */
-export function step(): bool {
+function step(): void {
   var obj: ManagedObject;
   switch (state) {
     case State.INIT: {
@@ -191,7 +191,6 @@ export function step(): bool {
       break;
     }
   }
-  return state != State.IDLE;
 }
 
 @inline function refToObj(ref: usize): ManagedObject {
diff --git a/tests/compiler/std/gc.optimized.wat b/tests/compiler/std/gc.optimized.wat
index e2a9b015..3443e5fc 100644
--- a/tests/compiler/std/gc.optimized.wat
+++ b/tests/compiler/std/gc.optimized.wat
@@ -1,11 +1,11 @@
 (module
  (type $iv (func (param i32)))
  (type $iii (func (param i32 i32) (result i32)))
- (type $i (func (result i32)))
+ (type $v (func))
  (type $ii (func (param i32) (result i32)))
  (type $iiv (func (param i32 i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
- (type $v (func))
+ (type $i (func (result i32)))
  (import "env" "abort" (func $~lib/env/abort (param i32 i32 i32 i32)))
  (global $~lib/allocator/arena/startOffset (mut i32) (i32.const 0))
  (global $~lib/allocator/arena/offset (mut i32) (i32.const 0))
@@ -275,7 +275,7 @@
    (get_local $0)
   )
  )
- (func $~lib/collector/itcm/step (; 14 ;) (type $i) (result i32)
+ (func $~lib/collector/itcm/step (; 14 ;) (type $v)
   (local $0 i32)
   (block $break|0
    (block $case3|0
@@ -435,10 +435,6 @@
     )
    )
   )
-  (i32.ne
-   (get_global $~lib/collector/itcm/state)
-   (i32.const 1)
-  )
  )
  (func $~lib/collector/itcm/__gc_allocate (; 15 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
   (local $2 i32)
@@ -449,9 +445,7 @@
    )
    (unreachable)
   )
-  (drop
-   (call $~lib/collector/itcm/step)
-  )
+  (call $~lib/collector/itcm/step)
   (i32.store offset=8
    (tee_local $2
     (call $~lib/memory/memory.allocate
@@ -501,9 +495,7 @@
     )
     (br $break|0)
    )
-   (drop
-    (call $~lib/collector/itcm/step)
-   )
+   (call $~lib/collector/itcm/step)
   )
   (loop $continue|1
    (if
@@ -512,9 +504,7 @@
      (i32.const 1)
     )
     (block
-     (drop
-      (call $~lib/collector/itcm/step)
-     )
+     (call $~lib/collector/itcm/step)
      (br $continue|1)
     )
    )
diff --git a/tests/compiler/std/gc.untouched.wat b/tests/compiler/std/gc.untouched.wat
index e5357ed0..5b930839 100644
--- a/tests/compiler/std/gc.untouched.wat
+++ b/tests/compiler/std/gc.untouched.wat
@@ -1,11 +1,11 @@
 (module
  (type $iv (func (param i32)))
  (type $iii (func (param i32 i32) (result i32)))
- (type $i (func (result i32)))
+ (type $v (func))
  (type $ii (func (param i32) (result i32)))
  (type $iiv (func (param i32 i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
- (type $v (func))
+ (type $i (func (result i32)))
  (import "env" "abort" (func $~lib/env/abort (param i32 i32 i32 i32)))
  (global $~lib/internal/allocator/AL_BITS i32 (i32.const 3))
  (global $~lib/internal/allocator/AL_SIZE i32 (i32.const 8))
@@ -331,7 +331,7 @@
   )
   (return)
  )
- (func $~lib/collector/itcm/step (; 15 ;) (type $i) (result i32)
+ (func $~lib/collector/itcm/step (; 15 ;) (type $v)
   (local $0 i32)
   (local $1 i32)
   (block $break|0
@@ -522,10 +522,6 @@
     (br $break|0)
    )
   )
-  (i32.ne
-   (get_global $~lib/collector/itcm/state)
-   (get_global $~lib/collector/itcm/State.IDLE)
-  )
  )
  (func $~lib/collector/itcm/__gc_allocate (; 16 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
   (local $2 i32)
@@ -539,9 +535,7 @@
    )
    (unreachable)
   )
-  (drop
-   (call $~lib/collector/itcm/step)
-  )
+  (call $~lib/collector/itcm/step)
   (set_local $2
    (call $~lib/memory/memory.allocate
     (i32.add
@@ -600,9 +594,7 @@
      (br $break|0)
     )
    )
-   (drop
-    (call $~lib/collector/itcm/step)
-   )
+   (call $~lib/collector/itcm/step)
   )
   (block $break|1
    (loop $continue|1
@@ -612,9 +604,7 @@
       (get_global $~lib/collector/itcm/State.IDLE)
      )
      (block
-      (drop
-       (call $~lib/collector/itcm/step)
-      )
+      (call $~lib/collector/itcm/step)
       (br $continue|1)
      )
     )