diff --git a/fuzzer/Fuzzer.java b/fuzzer/Fuzzer.java
index ef6a2b4517a269940df593c5001bb14efde0e5c4..344a45f055c7f0e46fcd896a925a30dbed11b5bc 100644
--- a/fuzzer/Fuzzer.java
+++ b/fuzzer/Fuzzer.java
@@ -116,7 +116,7 @@ public class Fuzzer {
                 return generateInput(true, INSTRUCTION_MAX, MAX_STACK_SIZE);
             case 1:
                 // Test with stack full
-                return generateInput(true, INSTRUCTION_MAX, MAX_STACK_SIZE - 5);
+                return generateInput(true, INSTRUCTION_MAX, MAX_STACK_SIZE - 1);
             case 3:
                 // Run static tests and empty stack
                 return getStaticTests() + generateInput(true, INSTRUCTION_MAX, 0);