diff --git a/compiler/noirc_evaluator/src/ssa.rs b/compiler/noirc_evaluator/src/ssa.rs
index d19c4467235..0bb81efe977 100644
--- a/compiler/noirc_evaluator/src/ssa.rs
+++ b/compiler/noirc_evaluator/src/ssa.rs
@@ -54,11 +54,6 @@ pub(crate) fn optimize_into_acir(
         .try_run_pass(Ssa::evaluate_assert_constant, "After Assert Constant:")?
         .try_run_pass(Ssa::unroll_loops, "After Unrolling:")?
         .run_pass(Ssa::simplify_cfg, "After Simplifying:")
-        // Run mem2reg before flattening to handle any promotion
-        // of values that can be accessed after loop unrolling.
-        // If there are slice mergers uncovered by loop unrolling
-        // and this pass is missed, slice merging will fail inside of flattening.
-        .run_pass(Ssa::mem2reg, "After Mem2Reg:")
         .run_pass(Ssa::flatten_cfg, "After Flattening:")
         .run_pass(Ssa::remove_bit_shifts, "After Removing Bit Shifts:")
         // Run mem2reg once more with the flattened CFG to catch any remaining loads/stores