diff --git a/runtime/exec_utils_test.cc b/runtime/exec_utils_test.cc
index a9c1ea2..c138ce3 100644
--- a/runtime/exec_utils_test.cc
+++ b/runtime/exec_utils_test.cc
@@ -36,12 +36,9 @@
     command.push_back("/usr/bin/id");
   }
   std::string error_msg;
-  if (!(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) {
-    // Running on Valgrind fails due to some memory that leaks in thread alternate signal stacks.
-    // TODO: Valgrind is no longer supported, but Address Sanitizer is:
-    // check whether the following code works with ASan.
-    EXPECT_TRUE(Exec(command, &error_msg));
-  }
+  // Historical note: Running on Valgrind failed due to some memory
+  // that leaks in thread alternate signal stacks.
+  EXPECT_TRUE(Exec(command, &error_msg));
   EXPECT_EQ(0U, error_msg.size()) << error_msg;
 }
 
@@ -52,13 +49,10 @@
   std::vector<std::string> command;
   command.push_back("bogus");
   std::string error_msg;
-  if (!(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) {
-    // Running on Valgrind fails due to some memory that leaks in thread alternate signal stacks.
-    // TODO: Valgrind is no longer supported, but Address Sanitizer is:
-    // check whether the following code works with ASan.
-    EXPECT_FALSE(Exec(command, &error_msg));
-    EXPECT_FALSE(error_msg.empty());
-  }
+  // Historical note: Running on Valgrind failed due to some memory
+  // that leaks in thread alternate signal stacks.
+  EXPECT_FALSE(Exec(command, &error_msg));
+  EXPECT_FALSE(error_msg.empty());
 }
 
 TEST_F(ExecUtilsTest, EnvSnapshotAdditionsAreNotVisible) {
@@ -76,13 +70,10 @@
   }
   command.push_back(kModifiedVariable);
   std::string error_msg;
-  if (!(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) {
-    // Running on Valgrind fails due to some memory that leaks in thread alternate signal stacks.
-    // TODO: Valgrind is no longer supported, but Address Sanitizer is:
-    // check whether the following code works with ASan.
-    EXPECT_FALSE(Exec(command, &error_msg));
-    EXPECT_NE(0U, error_msg.size()) << error_msg;
-  }
+  // Historical note: Running on Valgrind failed due to some memory
+  // that leaks in thread alternate signal stacks.
+  EXPECT_FALSE(Exec(command, &error_msg));
+  EXPECT_NE(0U, error_msg.size()) << error_msg;
 }
 
 TEST_F(ExecUtilsTest, EnvSnapshotDeletionsAreNotVisible) {
@@ -103,13 +94,10 @@
   }
   command.push_back(kDeletedVariable);
   std::string error_msg;
-  if (!(kRunningOnMemoryTool && kMemoryToolDetectsLeaks)) {
-    // Running on Valgrind fails due to some memory that leaks in thread alternate signal stacks.
-    // TODO: Valgrind is no longer supported, but Address Sanitizer is:
-    // check whether the following code works with ASan.
-    EXPECT_TRUE(Exec(command, &error_msg));
-    EXPECT_EQ(0U, error_msg.size()) << error_msg;
-  }
+  // Historical note: Running on Valgrind failed due to some memory
+  // that leaks in thread alternate signal stacks.
+  EXPECT_TRUE(Exec(command, &error_msg));
+  EXPECT_EQ(0U, error_msg.size()) << error_msg;
   // Restore the variable's value.
   EXPECT_EQ(setenv(kDeletedVariable, save_value, kOverwrite), 0);
 }