diff --git a/CMakeLists.txt b/CMakeLists.txt

index 5ca7729..aa7d4ef 100644

--- a/CMakeLists.txt

+++ b/CMakeLists.txt

@@ -612,8 +612,6 @@ endif()

 # Include compatibility layer

 if(MZ_COMPAT)

-    set(SOVERSION "1")

-

     set(FILE_H "zip.h")

     set(MZ_COMPAT_FILE "MZ_COMPAT_ZIP")

     configure_file(mz_compat_shim.h.in zip.h)