diff --git a/CMakeLists.txt b/CMakeLists.txt
index d50bf1235..7a911aff9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -227,9 +227,11 @@ check_symbol_exists("eat_newline_glitch" "term.h" HAVE_EAT_NEWLINE_GLITCH)
 check_function_exists(res_init, LIBC_HAS_RES_INIT)
 if(NOT LIBC_HAS_RES_INIT)
   find_library(RESOLV_LIBRARY resolv)
-  check_library_exists("${RESOLV_LIBRARY}" res_init "" LIBRESOLV_HAS_RES_INIT)
-  if(LIBRESOLV_HAS_RES_INIT)
-    list(APPEND EXTRA_LIBS ${RESOLV_LIBRARY})
+  if(RESOLV_LIBRARY)
+    check_library_exists("${RESOLV_LIBRARY}" res_init "" LIBRESOLV_HAS_RES_INIT)
+    if(LIBRESOLV_HAS_RES_INIT)
+      list(APPEND EXTRA_LIBS ${RESOLV_LIBRARY})
+    endif()
   endif()
 endif()