diff --git a/Source/Core/UICommon/CommandLineParse.cpp b/Source/Core/UICommon/CommandLineParse.cpp
@@ -25,10 +25,10 @@ class CommandLineConfigLayerLoader final : public Config::ConfigLayerLoader
                                const std::string& audio_backend)
       : ConfigLayerLoader(Config::LayerType::CommandLine)
   {
-    if (video_backend.size())
+    if (!video_backend.empty())
       m_values.emplace_back(std::make_tuple(Config::MAIN_GFX_BACKEND.location, video_backend));
 
-    if (audio_backend.size())
+    if (!audio_backend.empty())
       m_values.emplace_back(
           std::make_tuple(Config::MAIN_DSP_HLE.location, ValueToString(audio_backend == "HLE")));
 

diff --git a/Source/Core/UICommon/GameFileCache.cpp b/Source/Core/UICommon/GameFileCache.cpp
@@ -232,7 +232,7 @@ bool GameFileCache::SyncCacheFile(bool save)
   else
   {
     std::vector<u8> buffer(f.GetSize());
-    if (buffer.size() && f.ReadBytes(buffer.data(), buffer.size()))
+    if (!buffer.empty() && f.ReadBytes(buffer.data(), buffer.size()))
     {
       u8* ptr = buffer.data();
       PointerWrap p(&ptr, PointerWrap::MODE_READ);

diff --git a/Source/Core/VideoBackends/OGL/Render.cpp b/Source/Core/VideoBackends/OGL/Render.cpp
@@ -890,7 +890,7 @@ void Renderer::UpdateEFBCache(EFBAccessType type, u32 cacheRectIdx, const EFBRec
 {
   const u32 cacheType = (type == EFBAccessType::PeekZ ? 0 : 1);
 
-  if (!s_efbCache[cacheType][cacheRectIdx].size())
+  if (s_efbCache[cacheType][cacheRectIdx].empty())
     s_efbCache[cacheType][cacheRectIdx].resize(EFB_CACHE_RECT_SIZE * EFB_CACHE_RECT_SIZE);
 
   u32 targetPixelRcWidth = targetPixelRc.right - targetPixelRc.left;

diff --git a/Source/Core/VideoCommon/PostProcessing.cpp b/Source/Core/VideoCommon/PostProcessing.cpp
@@ -70,7 +70,7 @@ PostProcessingShaderConfiguration::~PostProcessingShaderConfiguration() = defaul
 std::string PostProcessingShaderConfiguration::LoadShader(std::string shader)
 {
   // Load the shader from the configuration if there isn't one sent to us.
-  if (shader == "")
+  if (shader.empty())
     shader = g_ActiveConfig.sPostProcessingShader;
   m_current_shader = shader;
 
@@ -81,7 +81,7 @@ std::string PostProcessingShaderConfiguration::LoadShader(std::string shader)
   std::string code;
   std::string path = File::GetUserPath(D_SHADERS_IDX) + sub_dir + shader + ".glsl";
 
-  if (shader == "")
+  if (shader.empty())
   {
     code = s_default_shader;
   }
@@ -150,7 +150,7 @@ void PostProcessingShaderConfiguration::LoadOptions(const std::string& code)
       }
 #endif
 
-      if (line.size() > 0)
+      if (!line.empty())
       {
         if (line[0] == '[')
         {
@@ -171,7 +171,7 @@ void PostProcessingShaderConfiguration::LoadOptions(const std::string& code)
             std::string key, value;
             IniFile::ParseLine(line, &key, &value);
 
-            if (!(key == "" && value == ""))
+            if (!(key.empty() && value.empty()))
               current_strings->m_options.emplace_back(key, value);
           }
         }
@@ -272,15 +272,15 @@ void PostProcessingShaderConfiguration::LoadOptionsConfiguration()
     {
       std::string value;
       ini.GetOrCreateSection(section)->Get(it.second.m_option_name, &value);
-      if (value != "")
+      if (!value.empty())
         TryParseVector(value, &it.second.m_integer_values);
     }
     break;
     case ConfigurationOption::OptionType::OPTION_FLOAT:
     {
       std::string value;
       ini.GetOrCreateSection(section)->Get(it.second.m_option_name, &value);
-      if (value != "")
+      if (!value.empty())
         TryParseVector(value, &it.second.m_float_values);
     }
     break;