diff --git a/configure.ac b/configure.ac
index ee0ae055e346..7b375c9a9654 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1006,7 +1006,7 @@ PHP_HELP_SEPARATOR([Extensions:
 
   --with-EXTENSION=[shared[,PATH]]
 
-    NOTE: Not all extensions can be build as 'shared'.
+    NOTE: Not all extensions can be built as 'shared'.
 
     Example: --with-foobar=shared,/usr/local/foobar/