diff --git a/bin/pt-table-usage b/bin/pt-table-usage
index a9848da8..f5cabd8d 100755
--- a/bin/pt-table-usage
+++ b/bin/pt-table-usage
@@ -3952,7 +3952,7 @@ my $unquoted_ident = qr/
 my $ident_alias = qr/
   \s+                                 # space before alias
   (?:(AS)\s+)?                        # optional AS keyword
-  ((?>$quoted_ident|$unquoted_ident)) # alais
+  ((?>$quoted_ident|$unquoted_ident)) # alias
 /xi;
 
 my $table_ident = qr/(?:
diff --git a/lib/SQLParser.pm b/lib/SQLParser.pm
index 8c16ff2e..514a30d7 100644
--- a/lib/SQLParser.pm
+++ b/lib/SQLParser.pm
@@ -59,7 +59,7 @@ my $unquoted_ident = qr/
 my $ident_alias = qr/
   \s+                                 # space before alias
   (?:(AS)\s+)?                        # optional AS keyword
-  ((?>$quoted_ident|$unquoted_ident)) # alais
+  ((?>$quoted_ident|$unquoted_ident)) # alias
 /xi;
 
 # A table is identified by 1 or 2 identifiers separated by a period