diff --git a/patches/minecraft/net/minecraft/world/gen/MapGenCaves.java.patch b/patches/minecraft/net/minecraft/world/gen/MapGenCaves.java.patch
index ace35eaa1..9bd334702 100644
--- a/patches/minecraft/net/minecraft/world/gen/MapGenCaves.java.patch
+++ b/patches/minecraft/net/minecraft/world/gen/MapGenCaves.java.patch
@@ -24,7 +24,7 @@
 -                                            byte b0 = par5ArrayOfByte[j4];
 -
 -                                            if (b0 == Block.grass.blockID)
-+                                            if (isTopBlock(par5ArrayOfByte, j4, j3, k2, k3, par3, par4))
++                                            if (isTopBlock(par5ArrayOfByte, j4, j3, k4, k3, par3, par4))
                                              {
                                                  flag3 = true;
                                              }
@@ -45,7 +45,7 @@
 -                                                    }
 -                                                }
 -                                            }
-+                                            digBlock(par5ArrayOfByte, j4, j3, k2, k3, par3, par4, flag3);
++                                            digBlock(par5ArrayOfByte, j4, j3, k4, k3, par3, par4, flag3);
                                          }
  
                                          --j4;
diff --git a/patches/minecraft/net/minecraft/world/gen/MapGenRavine.java.patch b/patches/minecraft/net/minecraft/world/gen/MapGenRavine.java.patch
index f5baec4fb..12155325d 100644
--- a/patches/minecraft/net/minecraft/world/gen/MapGenRavine.java.patch
+++ b/patches/minecraft/net/minecraft/world/gen/MapGenRavine.java.patch
@@ -24,7 +24,7 @@
 -                                            byte b0 = par5ArrayOfByte[j4];
 -
 -                                            if (b0 == Block.grass.blockID)
-+                                            if (isTopBlock(par5ArrayOfByte, j4, j3, k2, k3, par3, par4))
++                                            if (isTopBlock(par5ArrayOfByte, j4, j3, k4, k3, par3, par4))
                                              {
                                                  flag2 = true;
                                              }
@@ -45,7 +45,7 @@
 -                                                    }
 -                                                }
 -                                            }
-+                                            digBlock(par5ArrayOfByte, j4, j3, k2, k3, par3, par4, flag2);
++                                            digBlock(par5ArrayOfByte, j4, j3, k4, k3, par3, par4, flag2);
                                          }
  
                                          --j4;