diff --git a/vendor/cryptopp/CMakeLists.txt b/vendor/cryptopp/CMakeLists.txt
index 954498bd..c7a85785 100644
--- a/vendor/cryptopp/CMakeLists.txt
+++ b/vendor/cryptopp/CMakeLists.txt
@@ -4,6 +4,10 @@ add_library(cryptopp dummy.cpp)
 # note: include directory is called vendor_cryptopp instead of cryptopp to avoid include clashes with system headers
 target_include_directories(cryptopp SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+    target_compile_definitions(cryptopp PUBLIC -DCRYPTOPP_DEBUG)
+endif()
+
 if(NOT DISABLE_OPENMP)
     if((APPLE AND ((CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang") OR (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")))
         AND ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "7.0") AND (CMAKE_VERSION VERSION_LESS "3.12.0")))
@@ -33,4 +37,3 @@ set(BUILD_STATIC ON)
 add_subdirectory(vendor_cryptopp EXCLUDE_FROM_ALL)
 
 target_link_libraries(cryptopp PRIVATE cryptopp-static)
-