diff --git a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
index 0ccc80ea47d..fb64c4e1b97 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
+++ b/Userland/Libraries/LibWasm/AbstractMachine/Validator.cpp
@@ -2847,7 +2847,7 @@ VALIDATE_INSTRUCTION(v128_load8_lane)
     constexpr auto max_lane = 128 / N;
     constexpr auto max_alignment = N / 8;
 
-    if (arg.lane > max_lane)
+    if (arg.lane >= max_lane)
         return Errors::out_of_bounds("lane index"sv, arg.lane, 0u, max_lane);
 
     TRY(validate(arg.memory.memory_index));
@@ -2906,7 +2906,7 @@ VALIDATE_INSTRUCTION(v128_load64_lane)
 
     TRY(validate(arg.memory.memory_index));
 
-    if (arg.memory.align > max_alignment)
+    if ((1 << arg.memory.align) > max_alignment)
         return Errors::out_of_bounds("memory op alignment"sv, 1 << arg.memory.align, 0u, max_alignment);
 
     return stack.take_and_put<ValueType::V128, ValueType::I32>(ValueType::V128);