diff --git a/fnv1a.c b/fnv1a.c
index 8156a91..11646ee 100644
--- a/fnv1a.c
+++ b/fnv1a.c
@@ -2,6 +2,7 @@
  * Check wikipedia for details and pseudocode.
  */
 
+#include <assert.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -46,4 +47,14 @@ int main(void) {
 
     printf("FNV1a64 of \"Hello\": %lX\n", h64_2);
     printf("FNV1a32 of \"Hello\": %X\n", h32_2);
+
+    fflush(stdin);
+
+    assert(h64 == 0xA430D84680AABD0B);
+    assert(h32 == 0x4F9F2CAB);
+
+    assert(h64_2 == 0x63F0BFACF2C00F6B);
+    assert(h32_2 == 0xF55C314B);
+
+    printf("All tests passed!\n");
 }