diff --git a/platform_build/build-generator.xml b/platform_build/build-generator.xml
index db7fa195..1af34283 100644
--- a/platform_build/build-generator.xml
+++ b/platform_build/build-generator.xml
@@ -12,6 +12,8 @@
 
 		<!-- Compile helper classes used by the templates -->
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
             <include name="org/lwjgl/PointerWrapper.java"/>
             <include name="org/lwjgl/PointerBuffer.java"/>
 		</javac>
@@ -45,6 +47,8 @@
         <mkdir dir="${lwjgl.target.gen.native}/openal"/>
 
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" includes="org/lwjgl/util/generator/**.java" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
             <include name="org/lwjgl/util/generator/openal/**.java"/>
 			<compilerarg value="-Xlint:none"/>
 		</javac>
@@ -83,12 +87,16 @@
         <mkdir dir="${lwjgl.target.gen.native}/opengl"/>
 
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" includes="org/lwjgl/util/generator/**.java" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
             <include name="org/lwjgl/util/generator/opengl/**.java"/>
 			<compilerarg value="-Xlint:none"/>
 		</javac>
 
         <!-- Compile helper classes used by the templates -->
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
 			<include name="org/lwjgl/opengl/GLSync.java"/>
             <include name="org/lwjgl/opengl/AMDDebugOutputCallback.java"/>
             <include name="org/lwjgl/opengl/ARBDebugOutputCallback.java"/>
@@ -173,12 +181,16 @@
         <mkdir dir="${lwjgl.target.gen.native}/opengles"/>
 
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" includes="org/lwjgl/util/generator/**.java" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
 			<include name="org/lwjgl/util/generator/opengles/**.java"/>
 			<compilerarg value="-Xlint:none"/>
 		</javac>
 
         <!-- Compile helper classes used by the templates -->
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
 			<include name="org/lwjgl/opengles/EGLImageOES.java"/>
 			<include name="org/lwjgl/opengles/KHRDebugCallback.java"/>
 		</javac>
@@ -237,6 +249,8 @@
     <target name="-compile-opencl-helpers" description="Compiles java helpers for CL">
         <!-- Compile helper classes used by the templates -->
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
             <include name="org/lwjgl/opencl/CLPlatform.java"/>
             <include name="org/lwjgl/opencl/CLDevice.java"/>
             <include name="org/lwjgl/opencl/CLContext.java"/>
@@ -252,6 +266,8 @@
         <mkdir dir="${lwjgl.target.gen.native}/opencl"/>
 
         <javac debug="yes" srcdir="${lwjgl.src.java}" destdir="${lwjgl.target.gen.classes}" source="1.8" target="1.8" includes="org/lwjgl/util/generator/**.java" taskname="generator">
+			<compilerarg value="-sourcepath"/>
+			<compilerarg value="${lwjgl.src.java}:${lwjgl.src.stubs}"/>
             <include name="org/lwjgl/util/generator/opencl/**.java"/>
 			<compilerarg value="-Xlint:none"/>
 		</javac>