diff --git a/decompress/7zip_support.c b/decompress/7zip_support.c
index bce259d45c..ba541378aa 100644
--- a/decompress/7zip_support.c
+++ b/decompress/7zip_support.c
@@ -148,7 +148,7 @@ static SRes Utf16_To_Char(CBuf *buf, const uint16_t *s, int fileMode)
       }
    }
 #else
-   fileMode = fileMode;
+   (void)fileMode;
    return Utf16_To_Utf8Buf(buf, s, len);
 #endif
 }
diff --git a/deps/7zip/7zAlloc.c b/deps/7zip/7zAlloc.c
index 74c370e2df..2113657ace 100755
--- a/deps/7zip/7zAlloc.c
+++ b/deps/7zip/7zAlloc.c
@@ -5,7 +5,7 @@
 
 void *SzAlloc(void *p, size_t size)
 {
-   p = p;
+   (void)p;
    if (size == 0)
       return 0;
    return malloc(size);
@@ -13,13 +13,13 @@ void *SzAlloc(void *p, size_t size)
 
 void SzFree(void *p, void *address)
 {
-   p = p;
+   (void)p;
    free(address);
 }
 
 void *SzAllocTemp(void *p, size_t size)
 {
-   p = p;
+   (void)p;
    if (size == 0)
       return 0;
    return malloc(size);
@@ -27,6 +27,6 @@ void *SzAllocTemp(void *p, size_t size)
 
 void SzFreeTemp(void *p, void *address)
 {
-   p = p;
+   (void)p;
    free(address);
 }
diff --git a/input/drivers/sdl_input.c b/input/drivers/sdl_input.c
index 37db31ec6e..fc5daddb28 100644
--- a/input/drivers/sdl_input.c
+++ b/input/drivers/sdl_input.c
@@ -68,7 +68,7 @@ static bool sdl_key_pressed(int key)
 #else
    keymap = SDL_GetKeyState(&num_keys);
 #endif
-   if (sym < 0 || sym >= (unsigned)num_keys)
+   if (sym >= (unsigned)num_keys)
       return false;
 
    return keymap[sym];