diff --git a/src/libGLESv2/ProgramBinary.cpp b/src/libGLESv2/ProgramBinary.cpp
index 3977f20..6eebb8a 100644
--- a/src/libGLESv2/ProgramBinary.cpp
+++ b/src/libGLESv2/ProgramBinary.cpp
@@ -57,7 +57,9 @@
 {
 }
 
-ProgramBinary::ProgramBinary()
+unsigned int ProgramBinary::mCurrentSerial = 1;
+
+ProgramBinary::ProgramBinary() : mSerial(issueSerial())
 {
     mDevice = getDevice();
 
@@ -123,6 +125,16 @@
     }
 }
 
+unsigned int ProgramBinary::getSerial() const
+{
+    return mSerial;
+}
+
+unsigned int ProgramBinary::issueSerial()
+{
+    return mCurrentSerial++;
+}
+
 IDirect3DPixelShader9 *ProgramBinary::getPixelShader()
 {
     return mPixelExecutable;