diff --git a/common/unsafe/src/main/java/org/apache/spark/unsafe/Platform.java b/common/unsafe/src/main/java/org/apache/spark/unsafe/Platform.java
index 05c1abda5bc2f..5fd79aef98bbe 100644
--- a/common/unsafe/src/main/java/org/apache/spark/unsafe/Platform.java
+++ b/common/unsafe/src/main/java/org/apache/spark/unsafe/Platform.java
@@ -47,7 +47,7 @@ public final class Platform {
   static {
     boolean _unaligned;
     String arch = System.getProperty("os.arch", "");
-    if (arch.equals("ppc64le") || arch.equals("ppc64") || arch.matches("s390x")) {
+    if (arch.equals("ppc64le") || arch.equals("ppc64") || arch.equals("s390x")) {
       // Since java.nio.Bits.unaligned() doesn't return true on ppc (See JDK-8165231), but
       // ppc64 and ppc64le support it
       _unaligned = true;