2 files changed, 6 insertions, 2 deletions
diff --git a/js/src/gc/moz.build b/js/src/gc/moz.build
index 8f3188cf1f..d33dfb0079 100644
--- a/js/src/gc/moz.build
+++ b/js/src/gc/moz.build
@@ -24,6 +24,8 @@ SOURCES += [
     'Statistics.cpp',
     'StoreBuffer.cpp',
     'Tracer.cpp',
-    'Verifier.cpp',
     'Zone.cpp',
 ]
+
+if CONFIG['MOZ_DEBUG']:
+    SOURCES += ['Verifier.cpp']
diff --git a/js/src/jit/moz.build b/js/src/jit/moz.build
index bcd9b7dbf5..0c6c4f3b8c 100644
--- a/js/src/jit/moz.build
+++ b/js/src/jit/moz.build
@@ -32,7 +32,6 @@ SOURCES += [
     'CacheIR.cpp',
     'CodeGenerator.cpp',
     'CompileWrappers.cpp',
-    'Disassembler.cpp',
     'EagerSimdUnbox.cpp',
     'EdgeCaseAnalysis.cpp',
     'EffectiveAddressAnalysis.cpp',
@@ -83,6 +82,9 @@ SOURCES += [
     'WasmBCE.cpp',
 ]
 
+if CONFIG['MOZ_DEBUG']:
+    SOURCES += ['Disassembler.cpp']
+
 if not CONFIG['ENABLE_ION']:
     SOURCES += [
         'none/Trampoline-none.cpp'