diff --git a/modules/fs/fsw/src/cfe_fs_api.c b/modules/fs/fsw/src/cfe_fs_api.c
index a63262fbb..ef3154488 100644
--- a/modules/fs/fsw/src/cfe_fs_api.c
+++ b/modules/fs/fsw/src/cfe_fs_api.c
@@ -223,7 +223,7 @@ int32 CFE_FS_WriteHeader(osal_id_t FileDes, CFE_FS_Header_t *Hdr)
         Hdr->Length = sizeof(CFE_FS_Header_t);
 
         /* put the header, 'cfe1' in hex, in to the content type */
-        Hdr->ContentType = 0x63464531;
+        Hdr->ContentType = CFE_FS_FILE_CONTENT_ID;
 
         /*
         ** Fill in the timestamp fields...