diff --git a/src/library.js b/src/library.js
index c7dc8bf6a1455..13fdf52fc7827 100644
--- a/src/library.js
+++ b/src/library.js
@@ -188,9 +188,10 @@ addToLibrary({
 
   // Grows the wasm memory to the given byte size, and updates the JS views to
   // it. Returns 1 on success, 0 on error.
+  $growMemory__deps: ['$alignMemory'],
   $growMemory: (size) => {
     var b = wasmMemory.buffer;
-    var pages = (size - b.byteLength + {{{ WASM_PAGE_SIZE - 1 }}}) / {{{ WASM_PAGE_SIZE }}};
+    var pages = alignMemory(size - b.byteLength, {{{ WASM_PAGE_SIZE }}}) / {{{ WASM_PAGE_SIZE }}};
 #if RUNTIME_DEBUG
     dbg(`growMemory: ${size} (+${size - b.byteLength} bytes / ${pages} pages)`);
 #endif
@@ -2262,7 +2263,7 @@ addToLibrary({
 #if ASSERTIONS
     assert(alignment, "alignment argument is required");
 #endif
-    return Math.ceil(size / alignment) * alignment;
+    return ((size + (alignment - 1)) / alignment) | 0;
   },
 
   // Allocate memory for an mmap operation. This allocates space of the right
diff --git a/test/other/metadce/test_metadce_hello_dylink.jssize b/test/other/metadce/test_metadce_hello_dylink.jssize
index d91a3314c13d6..d4f33fe3e8f3a 100644
--- a/test/other/metadce/test_metadce_hello_dylink.jssize
+++ b/test/other/metadce/test_metadce_hello_dylink.jssize
@@ -1 +1 @@
-13895
+13887
diff --git a/test/other/metadce/test_metadce_mem_O3_grow.gzsize b/test/other/metadce/test_metadce_mem_O3_grow.gzsize
index ccea39fb1e0db..b8b2310fdb1f2 100644
--- a/test/other/metadce/test_metadce_mem_O3_grow.gzsize
+++ b/test/other/metadce/test_metadce_mem_O3_grow.gzsize
@@ -1 +1 @@
-2570
+2575
diff --git a/test/other/metadce/test_metadce_mem_O3_grow.jssize b/test/other/metadce/test_metadce_mem_O3_grow.jssize
index a695526401994..c19623257be4b 100644
--- a/test/other/metadce/test_metadce_mem_O3_grow.jssize
+++ b/test/other/metadce/test_metadce_mem_O3_grow.jssize
@@ -1 +1 @@
-5344
+5355