diff --git a/cleedpy/cleed/src/libmat/CMakeLists.txt b/cleedpy/cleed/src/libmat/CMakeLists.txt
index 76a0236..5f1bf7d 100644
--- a/cleedpy/cleed/src/libmat/CMakeLists.txt
+++ b/cleedpy/cleed/src/libmat/CMakeLists.txt
@@ -5,7 +5,7 @@ set(BLA_VENDOR OpenBLAS)
 file(GLOB LIBMAT_SOURCES "mat*.c")
 
 # Define the library from the collected source files
-add_library(mat ${LIBMAT_SOURCES})
+add_library(mat SHARED ${LIBMAT_SOURCES})
 
 # Find BLAS/LAPACK
 find_package(BLAS REQUIRED)