diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5d49cfa53c..3476d55b09 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -155,11 +155,11 @@ if(BUILD_STATIC_LIBS)
   endif()
   if(CURL_HAS_LTO)
     if(CMAKE_CONFIGURATION_TYPES)
-      set_target_properties(${LIB_OBJECT} PROPERTIES
+      set_target_properties(${LIB_STATIC} PROPERTIES
         INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
         INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
     else()
-      set_target_properties(${LIB_OBJECT} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
+      set_target_properties(${LIB_STATIC} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
     endif()
   endif()
 
@@ -191,11 +191,11 @@ if(BUILD_SHARED_LIBS)
   endif()
   if(CURL_HAS_LTO)
     if(CMAKE_CONFIGURATION_TYPES)
-      set_target_properties(${LIB_OBJECT} PROPERTIES
+      set_target_properties(${LIB_SHARED} PROPERTIES
         INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
         INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
     else()
-      set_target_properties(${LIB_OBJECT} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
+      set_target_properties(${LIB_SHARED} PROPERTIES INTERPROCEDURAL_OPTIMIZATION TRUE)
     endif()
   endif()