diff --git a/native-vm/microvium.c b/native-vm/microvium.c
index 813cad10..fad14f7d 100644
--- a/native-vm/microvium.c
+++ b/native-vm/microvium.c
@@ -921,8 +921,13 @@ LBL_OP_EXTENDED_1: {
 /* ------------------------------------------------------------------------- */
 
     MVM_CASE_CONTIGUOUS (VM_OP1_NOT_EQUAL): {
-      CODE_COVERAGE_UNTESTED(123); // Not hit
-      VM_NOT_IMPLEMENTED(vm);
+      if(mvm_equal(vm, reg1, reg2)) {
+        CODE_COVERAGE_UNTESTED(123); // Not hit
+        reg1 = VM_VALUE_FALSE;
+      } else {
+        CODE_COVERAGE_UNTESTED(485); // Not hit
+        reg1 = VM_VALUE_TRUE;
+      }
       goto LBL_DO_NEXT_INSTRUCTION;
     }
 
diff --git a/test/end-to-end/artifacts/code-coverage-summary.txt b/test/end-to-end/artifacts/code-coverage-summary.txt
index 110b6cf4..0e23a5cd 100644
--- a/test/end-to-end/artifacts/code-coverage-summary.txt
+++ b/test/end-to-end/artifacts/code-coverage-summary.txt
@@ -1 +1 @@
-microvium.c code coverage: 157 of 491 (32.0%)
\ No newline at end of file
+microvium.c code coverage: 157 of 492 (31.9%)
\ No newline at end of file