diff --git a/src/hashset.asm b/src/hashset.asm
index e1293ed..93d2be0 100644
--- a/src/hashset.asm
+++ b/src/hashset.asm
@@ -53,6 +53,11 @@ pub contains:
     add r13, r13, 12
     jmp r3 ; Calling the hash function with element in r1, context in r2
 
+    cmp r1, rz
+    jne contains_skip_one
+    add r1, r1, 1 ; If hash is zero, we add 1. That way hash being 0 means the item does not exist at a position
+    contains_skip_one:
+
     mov r12, r1
 
     add r10, r9, 16