diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf2d5a9..c8b0e40 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(Magick++ REQUIRED IMPORTED_TARGET Magick++)
 pkg_check_modules(libcryptopp IMPORTED_TARGET libcryptopp)
-if(NOT LIBCRYPTOPP_FOUND)
+if(NOT libcryptopp_FOUND)
   # Debian stretch package installs libcrypto++.pc
   pkg_check_modules(libcryptopp REQUIRED IMPORTED_TARGET libcrypto++)
 endif()