diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 8f61189..7c19fb6 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -239,7 +239,11 @@
 " ABB RAPID or Batch file for MSDOS.
 au BufNewFile,BufRead *.sys			call dist#ft#FTsys()
 if has("fname_case")
-  au BufNewFile,BufRead *.Sys,*.SYS			call dist#ft#FTsys()
+  au BufNewFile,BufRead *.Sys,*.SYS		call dist#ft#FTsys()
+endif
+au BufNewFile,BufRead *.sysx			setf rapid
+if has("fname_case")
+  au BufNewFile,BufRead *.sysX,*.Sysx,*.SysX,*.SYSX	setf rapid
 endif
 
 " Batch file for 4DOS
@@ -1243,9 +1247,9 @@
 au BufNewFile,BufRead *.dat			call dist#ft#FTdat()
 au BufNewFile,BufRead *.sub			setf krl
 if has("fname_case")
-   au BufNewFile,BufRead *.Src,*.SRC			call dist#ft#FTsrc()
-   au BufNewFile,BufRead *.Dat,*.DAT			call dist#ft#FTdat()
-   au BufNewFile,BufRead *.Sub,*.SUB			setf krl
+   au BufNewFile,BufRead *.Src,*.SRC		call dist#ft#FTsrc()
+   au BufNewFile,BufRead *.Dat,*.DAT		call dist#ft#FTdat()
+   au BufNewFile,BufRead *.Sub,*.SUB		setf krl
 endif
 
 " Kimwitu[++]
@@ -1498,7 +1502,11 @@
 " ABB Rapid, Modula-2, Modsim III or LambdaProlog
 au BufNewFile,BufRead *.mod			call dist#ft#FTmod()
 if has("fname_case")
-   au BufNewFile,BufRead *.Mod,*.MOD			call dist#ft#FTmod()
+   au BufNewFile,BufRead *.Mod,*.MOD		call dist#ft#FTmod()
+endif
+au BufNewFile,BufRead *.modx			setf rapid
+if has("fname_case")
+   au BufNewFile,BufRead *.modX,*.Modx,*.ModX,*.MODX	setf rapid
 endif
 
 " Modula-3 (.m3, .i3, .mg, .ig)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index d1588f3..b08c0f9 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -603,6 +603,7 @@
     radiance: ['file.rad', 'file.mat'],
     raku: ['file.pm6', 'file.p6', 'file.t6', 'file.pod6', 'file.raku', 'file.rakumod', 'file.rakudoc', 'file.rakutest'],
     raml: ['file.raml'],
+    rapid: ['file.sysx', 'file.Sysx', 'file.SysX', 'file.SYSx', 'file.SYSX', 'file.modx', 'file.Modx', 'file.ModX', 'file.MODx', 'file.MODX'],
     rasi: ['file.rasi'],
     ratpoison: ['.ratpoisonrc', 'ratpoisonrc'],
     rbs: ['file.rbs'],
diff --git a/src/version.c b/src/version.c
index 5f20651..ff2b77f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    738,
+/**/
     737,
 /**/
     736,