diff --git a/memory/app.mozbuild b/memory/app.mozbuild
index fc8d4f8002c7..a4adbd56dbda 100644
--- a/memory/app.mozbuild
+++ b/memory/app.mozbuild
@@ -13,6 +13,7 @@ EXPORTS.mozilla += [
 DIRS += [
     "/memory",
     "/mfbt",
+    "/third_party/fmt",
 ]
 
 EXPORTS.mozilla += [
diff --git a/mfbt/moz.build b/mfbt/moz.build
index 34d0bbcc4f96..11fae2cf4fc7 100644
--- a/mfbt/moz.build
+++ b/mfbt/moz.build
@@ -199,4 +199,5 @@ DEFINES["MOZ_SUPPORT_LEAKCHECKING"] = True
 # don't use mfbt.
 DIRS += ["../build/pure_virtual"]
 
-FINAL_LIBRARY = "mozglue"
+if CONFIG["MOZ_BUILD_APP"] != "memory":
+    FINAL_LIBRARY = "mozglue"
diff --git a/third_party/fmt/moz.build b/third_party/fmt/moz.build
index b51fbec26ddf..348e60c28465 100644
--- a/third_party/fmt/moz.build
+++ b/third_party/fmt/moz.build
@@ -4,7 +4,8 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-FINAL_LIBRARY = "mozglue"
+if CONFIG["MOZ_BUILD_APP"] != "memory":
+  FINAL_LIBRARY = "mozglue"
 
 with Files('**'):
     BUG_COMPONENT = ('Core', 'mozglue')