diff --git a/wrapper.py.in b/wrapper.py.in
index 7ef36cd..8f2ae39 100755
--- a/wrapper.py.in
+++ b/wrapper.py.in
@@ -131,7 +131,7 @@ else:
     depsdir = ['lib', 'lib64']
     searchvar = 'LD_LIBRARY_PATH'
 
-depsdir = [ f"@CMAKE_CURRENT_BINARY_DIR@/deps/{dir}" for dir in depsdir ]
+depsdir = [ os.path.join("@CMAKE_CURRENT_BINARY_DIR@/deps/", dir) for dir in depsdir ]
 
 # append the in-tree dependencies to the library path
 search = separator.join(