The article examines one of the least represented in the modern Russian historiography themes, the influence of «German factor» on the development of Soviet-Polish relations at the turn of 1918-1919. The author has used not well known for domestic scholars documents from the Archives of New Acts (Archiwum Akt Nowych) in Warsaw, a copy of the secret report of meeting held on 17 June 1919 at the German War Ministry is the most significant of them. This material reports about a meeting of the representative of Soviet Russia Iwankowicz with top military officials of the German War Ministry. The document is primarily interesting for the assessment of the level of development of the Soviet-German relations in the period under review. This source gives us a picture of negative attitude to both the new political order in Europe and to Poland, which was expanding its political influence at that time.