diff --git a/CMakeLists.txt b/CMakeLists.txt
index 765d20d..f823141 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,7 +19,6 @@ if (CMAKE_BUILD_TYPE MATCHES "Debug")
 endif()
 
 # https://t.me/NightShadowsHangout/670691
-# # https://t.me/NightShadowsHangout/688372
 list(APPEND FLAGS -Werror -Wall -Wextra -Wshadow -Wpedantic -Wno-gnu-anonymous-struct -fPIC -fno-rtti -Wconversion -Wno-unused-parameter -Wimplicit-fallthrough)
 
 # i have no idea why this hack wasn't needed before but it's needed if sanitizers are used
diff --git a/hiredis_wrapper.h b/hiredis_wrapper.h
index 093c37e..24a0fe1 100644
--- a/hiredis_wrapper.h
+++ b/hiredis_wrapper.h
@@ -6,8 +6,10 @@
 #include <exception>
 
 #pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpragmas"
 #pragma GCC diagnostic ignored "-Wc99-extensions"
 #pragma GCC diagnostic ignored "-Wconversion"
+#pragma GCC diagnostic ignored "-Wpedantic"
 #include <hiredis.h>
 #pragma GCC diagnostic pop
 
diff --git a/pixivclient.cpp b/pixivclient.cpp
index 5b7583e..f14172d 100644
--- a/pixivclient.cpp
+++ b/pixivclient.cpp
@@ -147,7 +147,7 @@ bool PixivClient::i_pximg_url_valid(const std::string& path) {
 static void to_lower(std::string& str) {
     for (size_t i = 0; i < str.size(); i++) {
         if (str[i] >= 'A' && str[i] <= 'Z') {
-            str[i] = str[i] - 'A' + 'a';
+            str[i] = static_cast<char>(str[i] - 'A' + 'a');
         }
     }
 }