diff --git a/src/AutoRecovery.cpp b/src/AutoRecovery.cpp
index 0b803db2f..461f50022 100644
--- a/src/AutoRecovery.cpp
+++ b/src/AutoRecovery.cpp
@@ -655,7 +655,7 @@ bool AutoSaveFile::Decode(const wxString & fileName)
       // "</project>" somewhere.
       const int bufsize = 16;
       char buf[bufsize + 1];
-      if (file.SeekEnd(-bufsize) != wxInvalidOffset)
+      if (file.SeekEnd(-bufsize))
       {
          if (file.Read(buf, bufsize) == bufsize)
          {
@@ -663,7 +663,7 @@ bool AutoSaveFile::Decode(const wxString & fileName)
             if (strstr(buf, "</project>") == 0)
             {
                // End of file does not contain closing </project> tag, so add it
-               if (file.Seek(0, wxFromEnd) != wxInvalidOffset)
+               if (file.Seek(0, wxFromEnd))
                {
                   strcpy(buf, "</project>\n");
                   file.Write(buf, strlen(buf));
diff --git a/src/effects/Echo.cpp b/src/effects/Echo.cpp
index 919ac83b3..15a88a8ca 100644
--- a/src/effects/Echo.cpp
+++ b/src/effects/Echo.cpp
@@ -32,8 +32,8 @@
 // Define keys, defaults, minimums, and maximums for the effect parameters
 //
 //     Name    Type     Key            Def   Min      Max      Scale
-Param( Delay,  float,   XO("Delay"),   1.0,  0.001,   FLT_MAX, 1  );
-Param( Decay,  float,   XO("Decay"),   0.5,  0.0,     FLT_MAX, 1  );
+Param( Delay,  float,   XO("Delay"),   1.0f, 0.001f,  FLT_MAX, 1.0f );
+Param( Decay,  float,   XO("Decay"),   0.5f, 0.0f,    FLT_MAX, 1.0f );
 
 EffectEcho::EffectEcho()
 {
diff --git a/src/effects/nyquist/Nyquist.cpp b/src/effects/nyquist/Nyquist.cpp
index de73c784c..2456b5a64 100644
--- a/src/effects/nyquist/Nyquist.cpp
+++ b/src/effects/nyquist/Nyquist.cpp
@@ -1848,7 +1848,7 @@ void NyquistEffect::BuildEffectWindow(ShuttleGui & S)
                S.AddSpace(10, 10);
 
                wxArrayString choices = wxStringTokenize(ctrl.label, wxT(","));
-               wxChoice *item = S.Id(ID_Choice + i).AddChoice(wxT(""), wxT(""), &choices);
+               S.Id(ID_Choice + i).AddChoice(wxT(""), wxT(""), &choices);
             }
             else
             {