diff --git a/options.c b/options.c
index e7356f6..e5ee4cf 100644
--- a/options.c
+++ b/options.c
@@ -465,26 +465,26 @@
 			    .oval = MEM_MALLOC,
 			    .help = "Use malloc(3) for IO buffers",
 			  },
-			  { .ival = "shm",
-			    .oval = MEM_SHM,
-			    .help = "Use shared memory segments for IO buffers",
-			  },
 #ifdef FIO_HAVE_HUGETLB
 			  { .ival = "shmhuge",
 			    .oval = MEM_SHMHUGE,
 			    .help = "Like shm, but use huge pages",
 			  },
-#endif
-			  { .ival = "mmap",
-			    .oval = MEM_MMAP,
-			    .help = "Use mmap(2) (file or anon) for IO buffers",
+			  { .ival = "shm",
+			    .oval = MEM_SHM,
+			    .help = "Use shared memory segments for IO buffers",
 			  },
+#endif
 #ifdef FIO_HAVE_HUGETLB
 			  { .ival = "mmaphuge",
 			    .oval = MEM_MMAPHUGE,
 			    .help = "Like mmap, but use huge pages",
 			  },
 #endif
+			  { .ival = "mmap",
+			    .oval = MEM_MMAP,
+			    .help = "Use mmap(2) (file or anon) for IO buffers",
+			  },
 		  },
 	},
 	{