diff --git a/CompilerChecks.cmake b/CompilerChecks.cmake
index cbad1f56..7a25b592 100644
--- a/CompilerChecks.cmake
+++ b/CompilerChecks.cmake
@@ -43,6 +43,12 @@ if (UNIX)
     add_c_compiler_flag("-Wno-format-zero-length" SUPPORTED_COMPILER_FLAGS)
     add_c_compiler_flag("-Wmissing-field-initializers" SUPPORTED_COMPILER_FLAGS)
     add_c_compiler_flag("-Wsign-compare" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Wold-style-definition" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Werror=old-style-definition" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Wimplicit-int" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Werror=implicit-int" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Wint-conversion" SUPPORTED_COMPILER_FLAGS)
+    add_c_compiler_flag("-Werror=int-conversion" SUPPORTED_COMPILER_FLAGS)
 
     check_c_compiler_flag("-Wformat" REQUIRED_FLAGS_WFORMAT)
     if (REQUIRED_FLAGS_WFORMAT)