diff --git a/CMNDAT/SaveData.cs b/CMNDAT/SaveData.cs
index 58fe5b7..275088f 100644
--- a/CMNDAT/SaveData.cs
+++ b/CMNDAT/SaveData.cs
@@ -41,6 +41,7 @@ public bool Open(String filename)
 						using (var output = new MemoryStream())
 						{
 							zlib.CopyTo(output);
+							output.Flush();
 							mBuffer = output.ToArray();
 						}
 					}
@@ -69,6 +70,7 @@ public bool Save()
 					using (var zlib = new System.IO.Compression.ZLibStream(output, System.IO.Compression.CompressionLevel.Fastest))
 					{
 						input.CopyTo(zlib);
+						zlib.Flush();
 					}
 					comp = output.ToArray();
 				}
diff --git a/LINKDATA/ViewModel.cs b/LINKDATA/ViewModel.cs
index 44e41da..af0b6e7 100644
--- a/LINKDATA/ViewModel.cs
+++ b/LINKDATA/ViewModel.cs
@@ -432,6 +432,7 @@ private Byte[] Comp(Byte[] data)
 					using (var zlib = new System.IO.Compression.ZLibStream(output, System.IO.Compression.CompressionLevel.Fastest))
 					{
 						input.CopyTo(zlib);
+						zlib.Flush();
 					}
 					result = output.ToArray();
 				}
@@ -449,6 +450,7 @@ private Byte[] Decomp(Byte[] data)
 					using (var output = new MemoryStream())
 					{
 						zlib.CopyTo(output);
+						output.Flush();
 						result = output.ToArray();
 					}
 				}
diff --git a/SCSHDAT/SaveData.cs b/SCSHDAT/SaveData.cs
index 11add51..7495629 100644
--- a/SCSHDAT/SaveData.cs
+++ b/SCSHDAT/SaveData.cs
@@ -42,6 +42,7 @@ public bool Open(String filename)
 						using (var output = new MemoryStream())
 						{
 							zlib.CopyTo(output);
+							output.Flush();
 							mBuffer = output.ToArray();
 						}
 					}
@@ -70,6 +71,7 @@ public bool Save()
 					using (var zlib = new System.IO.Compression.ZLibStream(output, System.IO.Compression.CompressionLevel.Fastest))
 					{
 						input.CopyTo(zlib);
+						zlib.Flush();
 					}
 					comp = output.ToArray();
 				}
diff --git a/STGDAT/SaveData.cs b/STGDAT/SaveData.cs
index cd3a7ca..ec1717b 100644
--- a/STGDAT/SaveData.cs
+++ b/STGDAT/SaveData.cs
@@ -407,6 +407,7 @@ private Byte[] Decomp(Byte[] data)
 					using (var output = new MemoryStream())
 					{
 						zlib.CopyTo(output);
+						output.Flush();
 						result = output.ToArray();
 					}
 				}