A drug delivery device comprising: a housing retaining a primary drug delivery assembly for the delivery of a primary medicament, wherein the primary drug delivery assembly comprises a primary dose setting member configured to rotate in a helical movement in proximal direction to set a dose of the primary medicament; and a secondary drug delivery assembly for the delivery of a secondary medicament, wherein the secondary drug delivery assembly comprises a secondary dose setting member configured to move in proximal direction to set a dose of the secondary medicament, characterized by a dose dial movable between a first position and a second position in axial direction with respect to the primary dose setting member, wherein the dose dial is configured in such way that the dose dial is rotationally constrained with respect to the housing when moved from the first position into the second position when the primary dose setting member is in a zero unit dose position and in such way that the dose dial is rotationally constrained to the primary dose setting member in the second position and is free to rotate relative to the housing, wherein a bridging component is axially constrained to the secondary dose setting member and is coupled to the dose dial in such way that the bridging component is axially constrained to the dose dial when the dose dial is moved from the first into the second position such that a dose of the secondary medicament is set, and in such way that rotation of the dose dial in the second position to set a dose of the primary medicament causes the dose dial to move relative to the bridging component in axial direction. a housing retaining a primary drug delivery assembly for the delivery of a primary medicament, wherein the primary drug delivery assembly comprises a primary dose setting member configured to rotate in a helical movement in proximal direction to set a dose of the primary medicament; and a secondary drug delivery assembly for the delivery of a secondary medicament, wherein the secondary drug delivery assembly comprises a secondary dose setting member configured to move in proximal direction to set a dose of the secondary medicament, characterized by a dose dial movable between a first position and a second position in axial direction with respect to the primary dose setting member, wherein the dose dial is configured in such way that the dose dial is rotationally constrained with respect to the housing when moved from the first position into the second position when the primary dose setting member is in a zero unit dose position and in such way that the dose dial is rotationally constrained to the primary dose setting member in the second position and is free to rotate relative to the housing, wherein a bridging component is axially constrained to the secondary dose setting member and is coupled to the dose dial in such way that the bridging component is axially constrained to the dose dial when the dose dial is moved from the first into the second position such that a dose of the secondary medicament is set, and in such way that rotation of the dose dial in the second position to set a dose of the primary medicament causes the dose dial to move relative to the bridging component in axial direction.