diff --git a/Source/JavaScriptCore/assembler/LinkBuffer.cpp b/Source/JavaScriptCore/assembler/LinkBuffer.cpp
index b6577a9e8c4e..7745793670b1 100644
--- a/Source/JavaScriptCore/assembler/LinkBuffer.cpp
+++ b/Source/JavaScriptCore/assembler/LinkBuffer.cpp
@@ -374,6 +374,7 @@ void LinkBuffer::copyCompactAndLinkCode(MacroAssembler& macroAssembler, JITCompi
         m_executableMemory->shrink(m_size);
     }
 
+#if ENABLE(JIT)
     if (useFastJITPermissions()) {
         ASSERT(codeOutData == outData);
         if (UNLIKELY(Options::dumpJITMemoryPath()))
@@ -382,6 +383,10 @@ void LinkBuffer::copyCompactAndLinkCode(MacroAssembler& macroAssembler, JITCompi
         ASSERT(codeOutData != outData);
         performJITMemcpy(codeOutData, outData, m_size);
     }
+#else
+    ASSERT(codeOutData != outData);
+    performJITMemcpy(codeOutData, outData, m_size);
+#endif
 
     jumpsToLink.clear();

diff --git a/Source/WTF/wtf/PlatformEnable.h b/Source/WTF/wtf/PlatformEnable.h
index 700f90adc6c3..f703d4239bc0 100644
--- a/Source/WTF/wtf/PlatformEnable.h
+++ b/Source/WTF/wtf/PlatformEnable.h
@@ -871,6 +871,6 @@
 #error "ENABLE(WEBGL2) requires ENABLE(WEBGL)"
 #endif
 
-#if CPU(ARM64) && CPU(ADDRESS64)
+#if CPU(ARM64) && CPU(ADDRESS64) && ENABLE(JIT)
 #define USE_JUMP_ISLANDS 1
 #endif