diff --git a/cmake/modules/FindIPOpt.cmake b/cmake/modules/FindIPOpt.cmake
index 69842aa4ca32cdd65fcb2f2c36ecaa4fdf57d309..676bf0bcc5a69af620a152aa741390f39464e6a4 100644
--- a/cmake/modules/FindIPOpt.cmake
+++ b/cmake/modules/FindIPOpt.cmake
@@ -40,7 +40,7 @@ find_library(HSL_LIBRARY
 
 find_package_handle_standard_args(hsl DEFAULT_MSG HSL_LIBRARY)
 find_package_handle_standard_args(dl DEFAULT_MSG DL_LIBRARY)
-find_package_handle_standard_args(Ipopt DEFAULT_MSG IPOPT_INCLUDE_DIR IPOPT_LIBRARY)
+find_package_handle_standard_args(IPOpt DEFAULT_MSG IPOPT_INCLUDE_DIR IPOPT_LIBRARY)
 
 if(IPOPT_FOUND)
     set(HAVE_IPOPT ENABLE_IPOPT)