diff --git a/cryptopp/CMakeLists.txt b/cryptopp/CMakeLists.txt
index 4a5ca91..d97d33a 100644
--- a/cryptopp/CMakeLists.txt
+++ b/cryptopp/CMakeLists.txt
@@ -1040,7 +1040,7 @@ endif()
 if(NOT CRYPTOPP_ARM32 AND NOT CRYPTOPP_ARMV8)
     list(FILTER cryptopp_SOURCES EXCLUDE REGEX "arm_|neon_|_armv4.S")
 endif()
-if(NOTCRYPTOPP_I386 AND NOT CRYPTOPP_AMD64)
+if(NOT CRYPTOPP_I386 AND NOT CRYPTOPP_AMD64)
     list(FILTER cryptopp_SOURCES EXCLUDE REGEX "sse_|_sse.cpp|_avx.cpp")
 endif()