The S&P Global Purchasing Managers' Index for Germany's manufacturing sector was 50.1 in a second estimate. In preliminary figures the index was 48.6.
An index number above 50 indicates increased activity in the sector.
The German economy started the year with growth of 0.3 percent in the first quarter, but the war in Iran and uncertainty about US tariffs have hit demand, and there is a risk that the second quarter will end in negative territory.
The corresponding index for France was raised to 49.7, compared with a preliminary reading of 48.9.
The French economy shrank 0.2 percent in the first quarter, and the country's central bank has signaled a reduction in its full-year forecast.
