1 files changed, 7 insertions, 3 deletions

diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index c629bbc5c..891a47c3c 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -64,8 +64,8 @@ endif()
 add_subdirectory(sirit)
 
 # libzip
-find_package(Libzip 1.5)
-if (NOT LIBZIP_FOUND)
+find_package(libzip 1.5)
+if (NOT libzip_FOUND)
     message(STATUS "libzip 1.5 or newer not found, falling back to externals")
     add_subdirectory(libzip EXCLUDE_FROM_ALL)
 endif()
@@ -97,4 +97,8 @@ if (ENABLE_WEB_SERVICE)
 endif()
 
 # Opus
-add_subdirectory(opus)
+find_package(opus 1.3)
+if (NOT opus_FOUND)
+    message(STATUS "opus 1.3 or newer not found, falling back to externals")
+    add_subdirectory(opus EXCLUDE_FROM_ALL)
+endif()