diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7274430d..eb69d67f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,5 +92,6 @@ else()
 endif()
 target_include_directories(_core PRIVATE extern/root/math/minuit2/inc)
 set_target_properties(_core PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
+target_compile_definitions(_core PUBLIC PYBIND11_DETAILED_ERROR_MESSAGES=1)
 
 install(TARGETS _core DESTINATION iminuit)