diff --git a/cmake/external/ada/CMakeLists.txt b/cmake/external/ada/CMakeLists.txt
index 4b8063b..fbddaac 100644
--- a/cmake/external/ada/CMakeLists.txt
+++ b/cmake/external/ada/CMakeLists.txt
@@ -4,7 +4,7 @@
 # For license and copyright information please follow this link:
 # https://github.com/desktop-app/legal/blob/master/LEGAL
 
-if (DESKTOP_APP_USE_PACKAGED)
+if (NOT DESKTOP_APP_USE_PACKAGED)
     add_library(external_ada INTERFACE IMPORTED GLOBAL)
     add_library(desktop-app::external_ada ALIAS external_ada)
 
@@ -37,10 +37,9 @@ elseif (APPLE)
 else()
     target_include_directories(external_ada SYSTEM
     INTERFACE
-        /usr/local/include
+        ${libs_loc}/ada/include
     )
-    find_library(DESKTOP_APP_ADA_LIBRARIES libada.a REQUIRED)
     set_target_properties(external_ada PROPERTIES
-        IMPORTED_LOCATION "${DESKTOP_APP_ADA_LIBRARIES}"
+        IMPORTED_LOCATION ${libs_loc}/ada/build/src/libada.a
     )
 endif()