--- a/db/sqlite3/src/moz.build
+++ b/db/sqlite3/src/moz.build
@@ -60,16 +60,17 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'uiki
 
 # Thunderbird needs the 2-argument version of fts3_tokenizer()
 if CONFIG['MOZ_THUNDERBIRD'] or CONFIG['MOZ_SUITE']:
     DEFINES['SQLITE_ENABLE_FTS3_TOKENIZER'] = 1
 
 # Turn on SQLite's assertions in debug builds.
 if CONFIG['MOZ_DEBUG']:
     DEFINES['SQLITE_DEBUG'] = 1
+    DEFINES['SQLITE_ENABLE_API_ARMOR'] = True
 
 if CONFIG['OS_TARGET'] == 'Android':
     # default to user readable only to fit Android security model
     DEFINES['SQLITE_DEFAULT_FILE_PERMISSIONS'] = '0600'
 
 # Force using malloc_usable_size when building with jemalloc because _msize
 # causes assertions on Win64. See bug 719579.
 if CONFIG['OS_ARCH'] == 'WINNT' and CONFIG['MOZ_MEMORY']: