diff --git a/README.md b/README.md
index 7a19236..5eed713 100644
--- a/README.md
+++ b/README.md
@@ -90,61 +90,63 @@ Here is a full example of a working VM host from [apps/emulator-mini](apps/emula
 
 --
 
-	#include <stdio.h>
-	#include <string.h>
-	#include <stdlib.h>
-	#include "uvm32.h"
-	#include "../common/uvm32_common_custom.h"
-	
-	// Precompiled binary program to print integers
-	// This code expects to print via CSR 0x13C (IOREQ_PRINTD in common/uvm32_common_custom.h)
-	uint8_t rom[] = {
-	  0x23, 0x26, 0x11, 0x00, 0xef, 0x00, 0x00, 0x01, 0x73, 0x50, 0x80, 0x13,
-	  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x93, 0x07, 0x00, 0x00,
-	  0x13, 0x07, 0xa0, 0x00, 0x73, 0x90, 0xc7, 0x13, 0x93, 0x87, 0x17, 0x00,
-	  0xe3, 0x9c, 0xe7, 0xfe, 0x67, 0x80, 0x00, 0x00
-	};
-	
-	// Create an identifier for our host handler
-	typedef enum {
-	    F_PRINTD,
-	} f_code_t;
-	
-	// Map VM ioreq IOREQ_PRINTD (0x13C) to F_PRINTD, tell VM to expect write of a U32
-	const uvm32_mapping_t env[] = {
-	    { .csr = IOREQ_PRINTD, .typ = IOREQ_TYP_U32_WR, .code = F_PRINTD },
-	};
-	
-	int main(int argc, char *argv[]) {
-	    uvm32_state_t vmst;
-	    uvm32_evt_t evt;
-	    bool isrunning = true;
-	
-	    uvm32_init(&vmst, env, sizeof(env) / sizeof(env[0]));
-	    uvm32_load(&vmst, rom, sizeof(rom));
-	
-	    while(isrunning) {
-	        uvm32_run(&vmst, &evt, 100);   // num instructions before vm considered hung
-	
-	        switch(evt.typ) {
-	            case UVM32_EVT_END:
-	                isrunning = false;
-	            break;
-	            case UVM32_EVT_IOREQ:    // vm has paused to handle IOREQ
-	                switch((f_code_t)evt.data.ioreq.code) {
-	                    case F_PRINTD:
-	                        // Type of F_PRINTD is IOREQ_TYP_U32_WR, so expect value in evt.data.ioreq.val.u32
-	                        printf("%d\n", evt.data.ioreq.val.u32);
-	                    break;
-	                }
-	            break;
-	            default:
-	            break;
-	        }
-	    }
-	
-	    return 0;
-	}
+```c
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "uvm32.h"
+#include "../common/uvm32_common_custom.h"
+
+// Precompiled binary program to print integers
+// This code expects to print via CSR 0x13C (IOREQ_PRINTD in common/uvm32_common_custom.h)
+uint8_t rom[] = {
+  0x23, 0x26, 0x11, 0x00, 0xef, 0x00, 0x00, 0x01, 0x73, 0x50, 0x80, 0x13,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x93, 0x07, 0x00, 0x00,
+  0x13, 0x07, 0xa0, 0x00, 0x73, 0x90, 0xc7, 0x13, 0x93, 0x87, 0x17, 0x00,
+  0xe3, 0x9c, 0xe7, 0xfe, 0x67, 0x80, 0x00, 0x00
+};
+
+// Create an identifier for our host handler
+typedef enum {
+    F_PRINTD,
+} f_code_t;
+
+// Map VM ioreq IOREQ_PRINTD (0x13C) to F_PRINTD, tell VM to expect write of a U32
+const uvm32_mapping_t env[] = {
+    { .csr = IOREQ_PRINTD, .typ = IOREQ_TYP_U32_WR, .code = F_PRINTD },
+};
+
+int main(int argc, char *argv[]) {
+    uvm32_state_t vmst;
+    uvm32_evt_t evt;
+    bool isrunning = true;
+
+    uvm32_init(&vmst, env, sizeof(env) / sizeof(env[0]));
+    uvm32_load(&vmst, rom, sizeof(rom));
+
+    while(isrunning) {
+        uvm32_run(&vmst, &evt, 100);   // num instructions before vm considered hung
+
+        switch(evt.typ) {
+            case UVM32_EVT_END:
+                isrunning = false;
+            break;
+            case UVM32_EVT_IOREQ:    // vm has paused to handle IOREQ
+                switch((f_code_t)evt.data.ioreq.code) {
+                    case F_PRINTD:
+                        // Type of F_PRINTD is IOREQ_TYP_U32_WR, so expect value in evt.data.ioreq.val.u32
+                        printf("%d\n", evt.data.ioreq.val.u32);
+                    break;
+                }
+            break;
+            default:
+            break;
+        }
+    }
+
+    return 0;
+}
+```
 
 ## Samples