diff --git a/sdk/android/api/org/webrtc/EglRenderer.java b/sdk/android/api/org/webrtc/EglRenderer.java
index 9004e7c1da..47bd0cf99e 100644
--- a/sdk/android/api/org/webrtc/EglRenderer.java
+++ b/sdk/android/api/org/webrtc/EglRenderer.java
@@ -290,7 +290,9 @@ public class EglRenderer implements VideoSink {
       // Release EGL and GL resources on render thread.
       renderThreadHandler.postAtFrontOfQueue(() -> {
         // Detach current shader program.
-        GLES20.glUseProgram(/* program= */ 0);
+        synchronized (EglBase.lock) {
+          GLES20.glUseProgram(/* program= */ 0);
+        }
         if (drawer != null) {
           drawer.release();
           drawer = null;
diff --git a/sdk/android/api/org/webrtc/GlShader.java b/sdk/android/api/org/webrtc/GlShader.java
index db5c630663..8f4cda3ba6 100644
--- a/sdk/android/api/org/webrtc/GlShader.java
+++ b/sdk/android/api/org/webrtc/GlShader.java
@@ -114,7 +114,9 @@ public class GlShader {
     if (program == -1) {
       throw new RuntimeException("The program has been released");
     }
-    GLES20.glUseProgram(program);
+    synchronized (EglBase.lock) {
+      GLES20.glUseProgram(program);
+    }
     GlUtil.checkNoGLES2Error("glUseProgram");
   }