diff --git a/test/mjsunit/compiler/parallel-proto-change.js b/test/mjsunit/compiler/parallel-proto-change.js
index aa1ac6de90..2392a37c95 100644
--- a/test/mjsunit/compiler/parallel-proto-change.js
+++ b/test/mjsunit/compiler/parallel-proto-change.js
@@ -28,6 +28,11 @@
 // Flags: --allow-natives-syntax
 // Flags: --parallel-recompilation --parallel-recompilation-delay=50
 
+if (!%IsParallelRecompilationSupported()) {
+  print("Parallel recompilation is disabled. Skipping this test.");
+  quit();
+}
+
 function assertUnoptimized(fun) {
   assertTrue(%GetOptimizationStatus(fun) != 1);
 }
diff --git a/test/mjsunit/manual-parallel-recompile.js b/test/mjsunit/manual-parallel-recompile.js
index 5253487f4b..b502fb19ad 100644
--- a/test/mjsunit/manual-parallel-recompile.js
+++ b/test/mjsunit/manual-parallel-recompile.js
@@ -28,6 +28,11 @@
 // Flags: --allow-natives-syntax --expose-gc
 // Flags: --parallel-recompilation --parallel-recompilation-delay=50
 
+if (!%IsParallelRecompilationSupported()) {
+  print("Parallel recompilation is disabled. Skipping this test.");
+  quit();
+}
+
 function assertUnoptimized(fun) {
   assertTrue(%GetOptimizationStatus(fun) != 1);
 }
@@ -60,10 +65,8 @@ assertUnoptimized(g);
 %OptimizeFunctionOnNextCall(g, "parallel");
 f(g(2));  // Trigger optimization.
 
-if (%IsParallelRecompilationSupported()) {
-  assertUnoptimized(f);  // Not yet optimized.
-  assertUnoptimized(g);
-}
+assertUnoptimized(f);  // Not yet optimized.
+assertUnoptimized(g);
 
 %CompleteOptimization(f);  // Wait till optimized code is installed.
 %CompleteOptimization(g);
diff --git a/test/mjsunit/parallel-initial-prototype-change.js b/test/mjsunit/parallel-initial-prototype-change.js
index 5544bebc1d..9f698bae63 100644
--- a/test/mjsunit/parallel-initial-prototype-change.js
+++ b/test/mjsunit/parallel-initial-prototype-change.js
@@ -28,6 +28,11 @@
 // Flags: --allow-natives-syntax
 // Flags: --parallel-recompilation --parallel-recompilation-delay=50
 
+if (!%IsParallelRecompilationSupported()) {
+  print("Parallel recompilation is disabled. Skipping this test.");
+  quit();
+}
+
 function assertUnoptimized(fun) {
   assertTrue(%GetOptimizationStatus(fun) != 1);
 }
diff --git a/test/mjsunit/parallel-invalidate-transition-map.js b/test/mjsunit/parallel-invalidate-transition-map.js
index 42a266f556..2a2276f1e2 100644
--- a/test/mjsunit/parallel-invalidate-transition-map.js
+++ b/test/mjsunit/parallel-invalidate-transition-map.js
@@ -28,6 +28,11 @@
 // Flags: --track-fields --track-double-fields --allow-natives-syntax
 // Flags: --parallel-recompilation --parallel-recompilation-delay=50
 
+if (!%IsParallelRecompilationSupported()) {
+  print("Parallel recompilation is disabled. Skipping this test.");
+  quit();
+}
+
 function assertUnoptimized(fun) {
   assertTrue(%GetOptimizationStatus(fun) != 1);
 }
diff --git a/test/mjsunit/parallel-optimize-disabled.js b/test/mjsunit/parallel-optimize-disabled.js
index 479684d407..b56303e08f 100644
--- a/test/mjsunit/parallel-optimize-disabled.js
+++ b/test/mjsunit/parallel-optimize-disabled.js
@@ -28,6 +28,11 @@
 // Flags: --nodead-code-elimination --parallel-recompilation
 // Flags: --allow-natives-syntax
 
+if (!%IsParallelRecompilationSupported()) {
+  print("Parallel recompilation is disabled. Skipping this test.");
+  quit();
+}
+
 function g() {  // g() cannot be optimized.
   const x = 1;
   x++;