diff --git a/src/java/org/lwjgl/opencl/CL.java b/src/java/org/lwjgl/opencl/CL.java
index 81070f8d..f000032d 100644
--- a/src/java/org/lwjgl/opencl/CL.java
+++ b/src/java/org/lwjgl/opencl/CL.java
@@ -148,7 +148,7 @@ public final class CL {
 	static long getFunctionAddress(String name) {
 		ByteBuffer buffer = MemoryUtil.encodeASCII(name);
 		long address = ngetFunctionAddress(MemoryUtil.getAddress(buffer));
-		if (address == null) LWJGLUtil.logger().log(() -> "Could not locate symbol " + name);
+		if (address == 0L) LWJGLUtil.logger().log(() -> "Could not locate symbol " + name);
 		return address;
 	}
 	private static native long ngetFunctionAddress(long name);
diff --git a/src/java/org/lwjgl/opengl/GLContext.java b/src/java/org/lwjgl/opengl/GLContext.java
index 03b45cca..61fd49d6 100644
--- a/src/java/org/lwjgl/opengl/GLContext.java
+++ b/src/java/org/lwjgl/opengl/GLContext.java
@@ -205,7 +205,7 @@ public final class GLContext {
 	public static long getFunctionAddress(String name) {
 		ByteBuffer buffer = MemoryUtil.encodeASCII(name);
 		long address = ngetFunctionAddress(MemoryUtil.getAddress(buffer));
-		if (address == null) LWJGLUtil.logger().log(() -> "Could not locate symbol " + name);
+		if (address == 0L) LWJGLUtil.logger().log(() -> "Could not locate symbol " + name);
 		return address;
 	}
 	private static native long ngetFunctionAddress(long name);