diff --git a/dace/codegen/targets/cuda.py b/dace/codegen/targets/cuda.py
index 6de2cc0769..125fcf2930 100644
--- a/dace/codegen/targets/cuda.py
+++ b/dace/codegen/targets/cuda.py
@@ -2139,8 +2139,8 @@ def get_kernel_dimensions(self, dfg_scope):
 
         # Check block size against configured maximum values, if those can be determined
         total_bsize = prod(block_size)
-        total_limit = Config.get('compiler', 'cuda', 'block_size_limit')
-        lastdim_limit = Config.get('compiler', 'cuda', 'block_size_lastdim_limit')
+        total_limit = int(Config.get('compiler', 'cuda', 'block_size_limit'))
+        lastdim_limit = int(Config.get('compiler', 'cuda', 'block_size_lastdim_limit'))
         if (total_bsize > total_limit) == True:
             raise ValueError(f'Block size for kernel "{kernelmap_entry.map.label}" ({block_size}) '
                              f'is larger than the possible number of threads per block ({total_limit}). '
diff --git a/dace/transformation/dataflow/add_threadblock_map.py b/dace/transformation/dataflow/add_threadblock_map.py
index 9bc5a8a2a7..febdb12861 100644
--- a/dace/transformation/dataflow/add_threadblock_map.py
+++ b/dace/transformation/dataflow/add_threadblock_map.py
@@ -76,8 +76,8 @@ def validate_block_size_limits(kernel_map_entry: nodes.MapEntry, block_size: Lis
     kernel_map_label = kernel_map_entry.map.label
 
     total_block_size = product(block_size)
-    limit = Config.get('compiler', 'cuda', 'block_size_limit')
-    lastdim_limit = Config.get('compiler', 'cuda', 'block_size_lastdim_limit')
+    limit = int(Config.get('compiler', 'cuda', 'block_size_limit'))
+    lastdim_limit = int(Config.get('compiler', 'cuda', 'block_size_lastdim_limit'))
 
     if (total_block_size > limit) == True:
         raise ValueError(f'Block size for kernel "{kernel_map_label}" ({block_size}) '