diff --git a/libsel4debug/src/bootinfo.c b/libsel4debug/src/bootinfo.c
index cc80b29e3..d3489b04e 100644
--- a/libsel4debug/src/bootinfo.c
+++ b/libsel4debug/src/bootinfo.c
@@ -15,16 +15,26 @@
 void debug_print_bootinfo(seL4_BootInfo *info)
 {
 
-    printf("Node %lu of %lu\n", (long)info->nodeID, (long)info->numNodes);
-    printf("IOPT levels:     %u\n", (int)info->numIOPTLevels);
-    printf("IPC buffer:      %p\n", info->ipcBuffer);
-    printf("Empty slots:     [%lu --> %lu]\n", (long)info->empty.start, (long)info->empty.end);
-    printf("sharedFrames:    [%lu --> %lu]\n", (long)info->sharedFrames.start, (long)info->sharedFrames.end);
-    printf("userImageFrames: [%lu --> %lu]\n", (long)info->userImageFrames.start, (long)info->userImageFrames.end);
-    printf("userImagePaging: [%lu --> %lu]\n", (long)info->userImagePaging.start, (long)info->userImagePaging.end);
-    printf("untypeds:        [%lu --> %lu]\n", (long)info->untyped.start, (long)info->untyped.end);
-    printf("Initial thread domain: %u\n", (int)info->initThreadDomain);
-    printf("Initial thread cnode size: %u\n", (int)info->initThreadCNodeSizeBits);
+    printf("Node %"SEL4_PRIu_word" of %"SEL4_PRIu_word"\n",
+           info->nodeID, info->numNodes);
+    printf("IOPT levels:     %"SEL4_PRIu_word"\n",
+           info->numIOPTLevels);
+    printf("IPC buffer:      %p\n",
+           info->ipcBuffer);
+    printf("Empty slots:     [%"SEL4_PRIu_word"--> %"SEL4_PRIu_word"]\n",
+           info->empty.start, info->empty.end);
+    printf("sharedFrames:    [%"SEL4_PRIu_word" --> %"SEL4_PRIu_word"]\n",
+           info->sharedFrames.start, info->sharedFrames.end);
+    printf("userImageFrames: [%"SEL4_PRIu_word" --> %"SEL4_PRIu_word"]\n",
+           info->userImageFrames.start, info->userImageFrames.end);
+    printf("userImagePaging: [%"SEL4_PRIu_word" --> %"SEL4_PRIu_word"]\n",
+           info->userImagePaging.start, info->userImagePaging.end);
+    printf("untypeds:        [%"SEL4_PRIu_word" --> %]\n",
+           info->untyped.start, info->untyped.end);
+    printf("Initial thread domain: %"SEL4_PRIu_word"\n",
+           info->initThreadDomain);
+    printf("Initial thread cnode size: %"SEL4_PRIu_word"\n",
+           info->initThreadCNodeSizeBits);
     printf("List of untypeds\n");
     printf("------------------\n");
     printf("Paddr    | Size   | Device\n");
@@ -34,7 +44,9 @@ void debug_print_bootinfo(seL4_BootInfo *info)
         int index = info->untypedList[i].sizeBits;
         assert(index < ARRAY_SIZE(sizes));
         sizes[index]++;
-        printf("%p | %zu | %d\n", (void *)info->untypedList[i].paddr, (size_t)info->untypedList[i].sizeBits,
+        printf("0x%"SEL4_PRIx_word" | %zu | %d\n",
+               info->untypedList[i].paddr,
+               (size_t)info->untypedList[i].sizeBits,
                (int)info->untypedList[i].isDevice);
     }