diff --git a/Snakefile b/Snakefile
index e97e507e..a58634e9 100644
--- a/Snakefile
+++ b/Snakefile
@@ -431,7 +431,7 @@ rule build_heat_demand:
 
 rule build_temperature_profiles:
     params:
-        snapshots= config["snapshots"],
+        snapshots=config["snapshots"],
     input:
         pop_layout_total="resources/population_shares/pop_layout_total.nc",
         pop_layout_urban="resources/population_shares/pop_layout_urban.nc",