diff --git a/game-music-emu/gme/Dual_Resampler.cpp b/game-music-emu/gme/Dual_Resampler.cpp
index 149f6d6af..0e7828530 100644
--- a/game-music-emu/gme/Dual_Resampler.cpp
+++ b/game-music-emu/gme/Dual_Resampler.cpp
@@ -18,7 +18,7 @@ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
 
 #include "blargg_source.h"
 
-unsigned const resampler_extra = 256;
+//unsigned const resampler_extra = 256;
 
 Dual_Resampler::Dual_Resampler() :
 	sample_buf_size(0),
@@ -71,6 +71,7 @@ void Dual_Resampler::play_frame_( Blip_Buffer& blip_buf, dsample_t* out )
 	
 	long count = resampler.read( sample_buf.begin(), sample_buf_size );
 	assert( count == (long) sample_buf_size );
+	(void)count;	// Silence warning in non-debug build
 	
 	mix_samples( blip_buf, out );
 	blip_buf.remove_samples( pair_count );
diff --git a/game-music-emu/gme/Hes_Cpu.cpp b/game-music-emu/gme/Hes_Cpu.cpp
index 4bfe8faff..51aa4259f 100644
--- a/game-music-emu/gme/Hes_Cpu.cpp
+++ b/game-music-emu/gme/Hes_Cpu.cpp
@@ -39,7 +39,7 @@ int const ram_addr = 0x2000;
 // status flags
 int const st_n = 0x80;
 int const st_v = 0x40;
-int const st_t = 0x20;
+//unused: int const st_t = 0x20;
 int const st_b = 0x10;
 int const st_d = 0x08;
 int const st_i = 0x04;
diff --git a/game-music-emu/gme/Spc_Cpu.cpp b/game-music-emu/gme/Spc_Cpu.cpp
index 90f60ed29..677ddd0d1 100644
--- a/game-music-emu/gme/Spc_Cpu.cpp
+++ b/game-music-emu/gme/Spc_Cpu.cpp
@@ -529,7 +529,7 @@ BOOST::uint8_t* Snes_Spc::run_until_( time_t end_time )\
 	return &REGS [r_cpuio0];\
 }
 
-int const cpu_lag_max = 12 - 1; // DIV YA,X takes 12 clocks
+//unused: int const cpu_lag_max = 12 - 1; // DIV YA,X takes 12 clocks
 
 void Snes_Spc::end_frame( time_t end_time )
 {