Minimum period P_min versus absolute differential rotation dΩ. The colors represent different temperature bins, the dotted black lines mark our detection limits. The dashed blue area shows theoretical predictions from Küker & Rüdiger (2011). We found that dΩ is almost independent of rotation period over a wide period range, but slightly increases towards short periods. Stars hotter than 6700 K do not follow the overall trend. The black lines show linear fits to our measurements, discarding stars hotter than 6700 K (dash-dotted line) and using all data points (dashed line), respectively.