diff --git a/src/native/configure.in b/src/native/configure.in
index c2f1bb91..014c92f5 100644
--- a/src/native/configure.in
+++ b/src/native/configure.in
@@ -51,8 +51,8 @@ if test "x$JAVA_HOME" = x; then
 else
   AC_MSG_RESULT($JAVA_HOME)
   JAVA_HOME="$JAVA_HOME"
-  CPPFLAGS="$CPPFLAGS -D_DEBUG -fno-rtti -fno-exceptions -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
-  CFLAGS="$CFLAGS -D_DEBUG -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
+  CPPFLAGS="$CPPFLAGS -fno-rtti -fno-exceptions -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
+  CFLAGS="$CFLAGS -pthread -D_X11 -Wall -I$JAVA_HOME/include -I$JAVA_HOME/include/linux"
 fi
 
 dnl Checks for libraries.
diff --git a/src/native/linux/org_lwjgl_Sys.cpp b/src/native/linux/org_lwjgl_Sys.cpp
index 61bdb7f3..fa09dca0 100644
--- a/src/native/linux/org_lwjgl_Sys.cpp
+++ b/src/native/linux/org_lwjgl_Sys.cpp
@@ -56,7 +56,8 @@ long int		hires_timer;				// Hires timer current time
 JNIEXPORT jobject JNICALL Java_org_lwjgl_Sys_createIndexBuffer
   (JNIEnv *env, jclass clazz, jint index)
 {
-	return env->NewDirectByteBuffer((void *)index, 0);
+	void *p = (char *)NULL + index;
+	return env->NewDirectByteBuffer(p, 0);
 }
   
 /*
diff --git a/src/native/win32/org_lwjgl_Sys.cpp b/src/native/win32/org_lwjgl_Sys.cpp
index 3dd3cba0..19901f38 100644
--- a/src/native/win32/org_lwjgl_Sys.cpp
+++ b/src/native/win32/org_lwjgl_Sys.cpp
@@ -57,7 +57,8 @@ __int64		hires_timer;				// Hires timer current time
 JNIEXPORT jobject JNICALL Java_org_lwjgl_Sys_createIndexBuffer
   (JNIEnv *env, jclass clazz, jint index)
 {
-	return env->NewDirectByteBuffer((void *)index, 0);
+	void *p = (char *)NULL + index;
+	return env->NewDirectByteBuffer(p, 0);
 }
 
 /*