diff --git a/contrib/alos2filter/CMakeLists.txt b/contrib/alos2filter/CMakeLists.txt
index 61a383f..464e7df 100644
--- a/contrib/alos2filter/CMakeLists.txt
+++ b/contrib/alos2filter/CMakeLists.txt
@@ -1,4 +1,9 @@
 add_library(alos2filter SHARED src/psfilt1.c)
+set_target_properties(alos2filter PROPERTIES
+    PREFIX ""
+    OUTPUT_NAME libalos2filter
+    SUFFIX .so)
+
 InstallSameDir(
     alos2filter
     __init__.py