diff --git a/src/share/vm/prims/jniCheck.cpp b/src/share/vm/prims/jniCheck.cpp
index 446c23143aed027f1436aff67e11e4a4069a7c83..403813282832b01c632cd96533fb3df3f649d49f 100644
--- a/src/share/vm/prims/jniCheck.cpp
+++ b/src/share/vm/prims/jniCheck.cpp
@@ -1425,7 +1425,7 @@ JNI_ENTRY_CHECKED(void,
     }
     else {
       GuardedMemory guarded((void*)chars);
-      if (guarded.verify_guards()) {
+      if (!guarded.verify_guards()) {
         tty->print_cr("ReleaseStringChars: release chars failed bounds check. "
             "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars));
         guarded.print_on(tty);
@@ -1508,7 +1508,7 @@ JNI_ENTRY_CHECKED(void,
     }
     else {
       GuardedMemory guarded((void*)chars);
-      if (guarded.verify_guards()) {
+      if (!guarded.verify_guards()) {
         tty->print_cr("ReleaseStringUTFChars: release chars failed bounds check. "
             "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars));
         guarded.print_on(tty);