diff --git a/src/common/fex_mini.cpp b/src/common/fex_mini.cpp
index 5c190d6f..578c0976 100644
--- a/src/common/fex_mini.cpp
+++ b/src/common/fex_mini.cpp
@@ -40,10 +40,11 @@ static const char* get_gzip_size( const char* path, long* eof )
 		return "Couldn't open file";
 
 	unsigned char buf [4];
+	int res;
 	if ( fread( buf, 2, 1, file ) > 0 && buf [0] == 0x1F && buf [1] == 0x8B )
 	{
 		fseek( file, -4, SEEK_END );
-		fread( buf, 4, 1, file );
+		res = fread( buf, 4, 1, file );
 		*eof = buf [3] * 0x1000000 + buf [2] * 0x10000 + buf [1] * 0x100 + buf [0];
 	}
 	else
@@ -51,7 +52,7 @@ static const char* get_gzip_size( const char* path, long* eof )
 		fseek( file, 0, SEEK_END );
 		*eof = ftell( file );
 	}
-	const char* err = (ferror( file ) || feof( file )) ? "Couldn't get file size" : 0;
+	const char* err = ((res != 1) || ferror( file ) || feof( file )) ? "Couldn't get file size" : 0;
 	fclose( file );
 	return err;
 }
diff --git a/src/filters/bilinear.cpp b/src/filters/bilinear.cpp
index 83ab868f..e2f9d1b7 100644
--- a/src/filters/bilinear.cpp
+++ b/src/filters/bilinear.cpp
@@ -245,8 +245,7 @@ void Bilinear32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,
   u32 *to_odd = (u32 *)(dstPtr + dstPitch);
 
   int from_width = width;
-  if(width+1 < from_width)
-    from_width = width+1;
+
   u32 *from = (u32 *)srcPtr;
   fill_rgb_row_32(from, from_width, rgb_row_cur, width+1);
 
@@ -330,8 +329,7 @@ void BilinearPlus32(u8 *srcPtr, u32 srcPitch, u8 * /* deltaPtr */,
   u32 *to_odd = (u32 *)(dstPtr + dstPitch);
 
   int from_width = width;
-  if(width+1 < from_width)
-    from_width = width+1;
+
   u32 *from = (u32 *)srcPtr;
   fill_rgb_row_32(from, from_width, rgb_row_cur, width+1);
 
diff --git a/src/gb/GB.cpp b/src/gb/GB.cpp
index 65e191d1..a759f4fc 100644
--- a/src/gb/GB.cpp
+++ b/src/gb/GB.cpp
@@ -3852,11 +3852,13 @@ static bool gbReadSaveState(gzFile gzFile)
   systemDrawScreen();
 
   if(version > GBSAVE_GAME_VERSION_1)
+  {
     if( skipSaveGameCheats ) {
       gbCheatsReadGameSkip(gzFile, version);
     } else {
       gbCheatsReadGame(gzFile, version);
     }
+  }
 
   if (version<11)
   {
diff --git a/src/gb/gbCodes.h b/src/gb/gbCodes.h
index 29eb771d..fb9a76ed 100644
--- a/src/gb/gbCodes.h
+++ b/src/gb/gbCodes.h
@@ -296,7 +296,7 @@
    break;
  case 0x37:
    // SCF
-   AF.B.B0 = AF.B.B0 & Z_FLAG | C_FLAG;
+   AF.B.B0 = (AF.B.B0 & Z_FLAG) | C_FLAG;
    break;
 case 0x38:
   // JR C,NN
diff --git a/src/gba/bios.cpp b/src/gba/bios.cpp
index 3c80aba8..2f52df49 100644
--- a/src/gba/bios.cpp
+++ b/src/gba/bios.cpp
@@ -369,7 +369,7 @@ void BIOS_Diff8bitUnFilterWram()
   source += 4;
 
   if(((source & 0xe000000) == 0) ||
-     ((source + ((header >> 8) & 0x1fffff) & 0xe000000) == 0))
+     (((source + ((header >> 8) & 0x1fffff)) & 0xe000000) == 0))
     return;
 
   int len = header >> 8;
diff --git a/src/gba/elf.cpp b/src/gba/elf.cpp
index 16f25276..3b0cf2f3 100644
--- a/src/gba/elf.cpp
+++ b/src/gba/elf.cpp
@@ -2782,9 +2782,16 @@ bool elfRead(const char *name, int& siz, FILE *f)
   long size = ftell(f);
   elfFileData = (u8 *)malloc(size);
   fseek(f, 0, SEEK_SET);
-  fread(elfFileData, 1, size, f);
+  int res = fread(elfFileData, 1, size, f);
   fclose(f);
 
+  if (res < 0)
+  {
+    free(elfFileData);
+    elfFileData = NULL;
+    return false;
+  }
+
   ELFHeader *header = (ELFHeader *)elfFileData;
 
   if(READ32LE(&header->magic) != 0x464C457F ||
diff --git a/src/gba/remote.cpp b/src/gba/remote.cpp
index dbf3d306..7c51d707 100644
--- a/src/gba/remote.cpp
+++ b/src/gba/remote.cpp
@@ -168,10 +168,12 @@ int remotePipeRecv(char *data, int len)
 bool remotePipeInit()
 {
   char dummy;
-  read(0, &dummy, 1);
-  if(dummy != '+') {
-    fprintf(stderr, "ACK not received\n");
-    exit(-1);
+  if (read(0, &dummy, 1) == 1)
+  {
+    if(dummy != '+') {
+      fprintf(stderr, "ACK not received\n");
+      exit(-1);
+    }
   }
 
   return true;