diff --git a/fex/7z_C/Ppmd7.c b/fex/7z_C/Ppmd7.c
index 4b160cf0..fecaf66e 100644
--- a/fex/7z_C/Ppmd7.c
+++ b/fex/7z_C/Ppmd7.c
@@ -542,7 +542,7 @@ static void UpdateModel(CPpmd7 *p)
         s->Freq <<= 1;
       else
         s->Freq = MAX_FREQ - 4;
-      c->SummFreq = (UInt16)(s->Freq + p->InitEsc + (ns > 3));
+      c->SummFreq = (UInt16)(s->Freq + p->InitEsc + (ns >> 3));
     }
     cf = 2 * (UInt32)p->FoundState->Freq * (c->SummFreq + 6);
     sf = (UInt32)s0 + c->SummFreq;
diff --git a/src/common/Patch.cpp b/src/common/Patch.cpp
index 3834669f..ac4893a7 100644
--- a/src/common/Patch.cpp
+++ b/src/common/Patch.cpp
@@ -276,7 +276,7 @@ static bool patchApplyUPS(const char *patchname, u8 **rom, int *size)
 static int ppfVersion(FILE *f)
 {
   fseeko64(f, 0, SEEK_SET);
-  if (fgetc(f) != 'P' || fgetc(f) != 'P' || fgetc(f) != 'F')
+  if (fgetc(f) != 'P' || fgetc(f) != 'P' || fgetc(f) != 'F') //-V501
     return 0;
   switch(fgetc(f)){
     case '1': return 1;
diff --git a/src/gba/elf.cpp b/src/gba/elf.cpp
index 3b0cf2f3..47744431 100644
--- a/src/gba/elf.cpp
+++ b/src/gba/elf.cpp
@@ -1058,7 +1058,7 @@ void elfParseCFA(u8 *top)
 
     if(id == 0xffffffff) {
       // skip version
-      *data++;
+      (*data++);
 
       ELFcie *cie = (ELFcie *)calloc(1, sizeof(ELFcie));
 
diff --git a/src/gba/remote.cpp b/src/gba/remote.cpp
index 0dc58856..86f93ba8 100644
--- a/src/gba/remote.cpp
+++ b/src/gba/remote.cpp
@@ -75,7 +75,7 @@ bool remoteTcpInit()
 
     remoteListenSocket = s;
 
-    if(s < 0) {
+    if(s == INVALID_SOCKET) {
       fprintf(stderr,"Error opening socket\n");
       exit(-1);
     }
diff --git a/src/win32/rpi.cpp b/src/win32/rpi.cpp
index 73ad0600..c5ae7744 100644
--- a/src/win32/rpi.cpp
+++ b/src/win32/rpi.cpp
@@ -138,7 +138,7 @@ void rpiFilter(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr, u8 *dstPtr, u32 dstPitch,
 					*(pOCur++) = ((*pICur & 0xF800) << rshiftDiff) |
 						      ((*pICur & 0x07E0) << gshiftDiff) |
 						      ((*pICur & 0x001F) << bshiftDiff);
-					*pICur++;
+					*(pICur++);
 				}
 				pI = pICur = (u16 *)((char *)pI + dstPitch);
 				pO = pOCur = (u32 *)((char *)pO + dstPitch);
@@ -157,7 +157,7 @@ void rpiFilter(u8 *srcPtr, u32 srcPitch, u8 *deltaPtr, u8 *dstPtr, u32 dstPitch,
 					*(pOCur++) = ((*pICur & 0xF800) >> rshiftDiff) |
 						      ((*pICur & 0x07E0) << gshiftDiff) |
 						      ((*pICur & 0x001F) << bshiftDiff);
-					*pICur++;
+					*(pICur++);
 				}
 				pI = pICur = (u16 *)((char *)pI + dstPitch);
 				pO = pOCur = (u32 *)((char *)pO + dstPitch);