diff --git a/jsoncpp-namespaced-targets.cmake b/jsoncpp-namespaced-targets.cmake
index ac1504e..70a79ee 100644
--- a/jsoncpp-namespaced-targets.cmake
+++ b/jsoncpp-namespaced-targets.cmake
@@ -1,7 +1,9 @@
-if (TARGET jsoncpp_static)
-    add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
-    set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_static")
-elseif (TARGET jsoncpp_lib)
-    add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
-    set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_lib")
-endif ()
\ No newline at end of file
+if (NOT TARGET JsonCpp::JsonCpp)
+    if (TARGET jsoncpp_static)
+        add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
+        set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_static")
+    elseif (TARGET jsoncpp_lib)
+        add_library(JsonCpp::JsonCpp INTERFACE IMPORTED)
+        set_target_properties(JsonCpp::JsonCpp PROPERTIES INTERFACE_LINK_LIBRARIES "jsoncpp_lib")
+    endif ()
+endif ()