diff --git a/opl/opl3.c b/opl/opl3.c
index 090854bc..81ef0f6a 100644
--- a/opl/opl3.c
+++ b/opl/opl3.c
@@ -1420,11 +1420,11 @@ void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v)
 
 void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples)
 {
-	Bit32u i;
+    Bit32u i;
 	
-	for(i = 0; i < numsamples; i++)
+    for(i = 0; i < numsamples; i++)
     {
         OPL3_GenerateResampled(chip, sndptr);
         sndptr += 2;
-	}
+    }
 }
diff --git a/opl/opl3.h b/opl/opl3.h
index 0c738af5..7d2ace42 100644
--- a/opl/opl3.h
+++ b/opl/opl3.h
@@ -114,7 +114,7 @@ struct _opl3_chip {
     Bit16s zeromod;
     Bit32s mixbuff[2];
     //OPL3L
-	Bit32s rateratio; 
+    Bit32s rateratio; 
     Bit32s samplecnt;
     Bit16s oldsamples[2];
     Bit16s samples[2];
diff --git a/opl/opl_sdl.c b/opl/opl_sdl.c
index 40449fef..370e6b87 100644
--- a/opl/opl_sdl.c
+++ b/opl/opl_sdl.c
@@ -152,7 +152,7 @@ static void AdvanceTime(unsigned int nsamples)
 
     SDL_UnlockMutex(callback_queue_mutex);
 }
-  
+
 // Call the OPL emulator code to fill the specified buffer.
 
 static void FillBuffer(int16_t *buffer, unsigned int nsamples)