diff --git a/cmake/OpenCVFindLibsGrfmt.cmake b/cmake/OpenCVFindLibsGrfmt.cmake
index 6e53c45ba6..8c7bc939b8 100644
--- a/cmake/OpenCVFindLibsGrfmt.cmake
+++ b/cmake/OpenCVFindLibsGrfmt.cmake
@@ -304,6 +304,9 @@ if(WITH_SPNG)
     else()
       if(PkgConfig_FOUND)
         pkg_check_modules(SPNG QUIET spng)
+        if(SPNG_FOUND)
+          set(SPNG_LIBRARY ${SPNG_LIBRARIES} CACHE INTERNAL "")
+        endif()
       endif()
     endif()
     if(SPNG_FOUND)