diff --git a/core/src/processing/core/PApplet.java b/core/src/processing/core/PApplet.java
index a6ee0bb92..3a3534750 100755
--- a/core/src/processing/core/PApplet.java
+++ b/core/src/processing/core/PApplet.java
@@ -2637,7 +2637,7 @@ public class PApplet extends Applet
 //  protected int eventCount;
 
 
-  class InternalEventQueue {
+  static class InternalEventQueue {
     protected Event queue[] = new Event[10];
     protected int offset;
     protected int count;
diff --git a/core/src/processing/data/Table.java b/core/src/processing/data/Table.java
index 6b89f5af7..b9f7db424 100644
--- a/core/src/processing/data/Table.java
+++ b/core/src/processing/data/Table.java
@@ -3627,7 +3627,7 @@ public class Table {
   // . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
 
-  class HashMapBlows {
+  static class HashMapBlows {
     HashMap<String,Integer> dataToIndex = new HashMap<String, Integer>();
     ArrayList<String> indexToData = new ArrayList<String>();
 
diff --git a/core/src/processing/opengl/PJOGL.java b/core/src/processing/opengl/PJOGL.java
index 1ecb147cb..355c56b17 100644
--- a/core/src/processing/opengl/PJOGL.java
+++ b/core/src/processing/opengl/PJOGL.java
@@ -1195,7 +1195,7 @@ public class PJOGL extends PGL {
   }
 
 
-  protected class Tessellator implements PGL.Tessellator {
+  protected static class Tessellator implements PGL.Tessellator {
     protected GLUtessellator tess;
     protected TessellatorCallback callback;
     protected GLUCallback gluCallback;
diff --git a/core/src/processing/opengl/PShader.java b/core/src/processing/opengl/PShader.java
index b34351c87..aad807194 100644
--- a/core/src/processing/opengl/PShader.java
+++ b/core/src/processing/opengl/PShader.java
@@ -1438,7 +1438,7 @@ public class PShader implements PConstants {
   //
   // Class to store a user-specified value for a uniform parameter
   // in the shader
-  protected class UniformValue {
+  protected static class UniformValue {
     static final int INT1      = 0;
     static final int INT2      = 1;
     static final int INT3      = 2;