diff --git a/auto/cc/bcc b/auto/cc/bcc
index ec82e60fb..e990a9f73 100644
--- a/auto/cc/bcc
+++ b/auto/cc/bcc
@@ -62,7 +62,6 @@ ngx_include_opt="-I"
 ngx_objout="-o"
 ngx_binout="-e"
 ngx_objext="obj"
-ngx_binext=".exe"
 
 ngx_long_start='@&&|
 	'
diff --git a/auto/cc/msvc b/auto/cc/msvc
index 4eef10105..825725299 100644
--- a/auto/cc/msvc
+++ b/auto/cc/msvc
@@ -142,7 +142,6 @@ ngx_pic_opt=
 ngx_objout="-Fo"
 ngx_binout="-Fe"
 ngx_objext="obj"
-ngx_binext=".exe"
 
 ngx_long_start='@<<
 	'
diff --git a/auto/cc/owc b/auto/cc/owc
index a063aa341..f7fd88c9a 100644
--- a/auto/cc/owc
+++ b/auto/cc/owc
@@ -84,7 +84,6 @@ ngx_include_opt="-i="
 ngx_objout="-fo"
 ngx_binout="-fe="
 ngx_objext="obj"
-ngx_binext=".exe"
 
 ngx_regex_dirsep='\\'
 ngx_dirsep="\\"
diff --git a/auto/os/win32 b/auto/os/win32
index 650cf495a..7a8277496 100644
--- a/auto/os/win32
+++ b/auto/os/win32
@@ -13,6 +13,7 @@ NGX_ICONS="$NGX_WIN32_ICONS"
 SELECT_SRCS=$WIN32_SELECT_SRCS
 
 ngx_pic_opt=
+ngx_binext=".exe"
 
 case "$NGX_CC_NAME" in