diff --git a/common/rfb/Encoder.h b/common/rfb/Encoder.h
index 66a10d2..1e57fda 100644
--- a/common/rfb/Encoder.h
+++ b/common/rfb/Encoder.h
@@ -42,7 +42,7 @@
   class Encoder {
   public:
     Encoder(SConnection* conn, int encoding,
-            enum EncoderFlags flags, unsigned int maxPaletteSize);
+            enum EncoderFlags flags, unsigned int maxPaletteSize=-1);
     virtual ~Encoder();
 
     // isSupported() should return a boolean indicating if this encoder
diff --git a/common/rfb/HextileEncoder.cxx b/common/rfb/HextileEncoder.cxx
index 418a440..47e5251 100644
--- a/common/rfb/HextileEncoder.cxx
+++ b/common/rfb/HextileEncoder.cxx
@@ -45,7 +45,7 @@
 #undef BPP
 
 HextileEncoder::HextileEncoder(SConnection* conn) :
-  Encoder(conn, encodingHextile, EncoderPlain, -1)
+  Encoder(conn, encodingHextile, EncoderPlain)
 {
 }
 
diff --git a/common/rfb/RREEncoder.cxx b/common/rfb/RREEncoder.cxx
index 60a0663..7287e7e 100644
--- a/common/rfb/RREEncoder.cxx
+++ b/common/rfb/RREEncoder.cxx
@@ -37,7 +37,7 @@
 #undef BPP
 
 RREEncoder::RREEncoder(SConnection* conn) :
-  Encoder(conn, encodingRRE, EncoderPlain, -1)
+  Encoder(conn, encodingRRE, EncoderPlain)
 {
 }
 
diff --git a/common/rfb/RawEncoder.cxx b/common/rfb/RawEncoder.cxx
index 4090427..b12cf06 100644
--- a/common/rfb/RawEncoder.cxx
+++ b/common/rfb/RawEncoder.cxx
@@ -25,7 +25,7 @@
 using namespace rfb;
 
 RawEncoder::RawEncoder(SConnection* conn) :
-  Encoder(conn, encodingRaw, EncoderPlain, -1)
+  Encoder(conn, encodingRaw, EncoderPlain)
 {
 }
 
diff --git a/common/rfb/TightJPEGEncoder.cxx b/common/rfb/TightJPEGEncoder.cxx
index 385207f..5d39b62 100644
--- a/common/rfb/TightJPEGEncoder.cxx
+++ b/common/rfb/TightJPEGEncoder.cxx
@@ -64,7 +64,7 @@
 
 
 TightJPEGEncoder::TightJPEGEncoder(SConnection* conn) :
-  Encoder(conn, encodingTight, (EncoderFlags)(EncoderUseNativePF | EncoderLossy), -1),
+  Encoder(conn, encodingTight, (EncoderFlags)(EncoderUseNativePF | EncoderLossy)),
   qualityLevel(-1), fineQuality(-1), fineSubsampling(subsampleUndefined)
 {
 }