A prodrug or a pharmaceutically acceptable salt thereof comprising a drug linker conjugate D-L, wherein D is a biologically active moiety containing an aromatic hydroxyl group; and L is a non-biologically active linker having a first and a second amine group, which first amine intramolecularly catalyzes the hydrolysis of the carbamate bond to the drug moiety, wherein the first amine is a primary, secondary or tertiary amine and L is connected to D through a carbamate bond connecting the second amine group and the aromatic hydroxyl group of D, wherein L contains i) a moiety L 1 represented by formula, wherein the dashed line indicates the attachment of L 1 to the aromatic hydroxyl group of D by forming a carbamate group; R 1 is selected from the group consisting of C 1-4 alkyl; heteroalkyl; C 3-7 cycloalkyl; and R 2, R 2a, R 3, R 3a are independently selected from the group consisting of hydrogen, substituted or non-substituted linear, branched or cyclic C 1-4 alkyl and heteroalkyl; m is independently 2, 3 or 4; ii) a moiety L 2, which is a chemical bond or a spacer, and L 2 is bound to a carrier group Z, which is a polymer with a molecular weight ≥ 500 g/mol, wherein L 1 is substituted with one to four L 2 moieties, optionally, L is further substituted. D is a biologically active moiety containing an aromatic hydroxyl group; and L is a non-biologically active linker having a first and a second amine group, which first amine intramolecularly catalyzes the hydrolysis of the carbamate bond to the drug moiety, wherein the first amine is a primary, secondary or tertiary amine and L is connected to D through a carbamate bond connecting the second amine group and the aromatic hydroxyl group of D, the first amine is a primary, secondary or tertiary amine and L is connected to D through a carbamate bond connecting the second amine group and the aromatic hydroxyl group of D, wherein L contains i) a moiety L 1 represented by formula, wherein the dashed line indicates the attachment of L 1 to the aromatic hydroxyl group of D by forming a carbamate group; R 1 is selected from the group consisting of C 1-4 alkyl; heteroalkyl; C 3-7 cycloalkyl; and R 2, R 2a, R 3, R 3a are independently selected from the group consisting of hydrogen, substituted or non-substituted linear, branched or cyclic C 1-4 alkyl and heteroalkyl; m is independently 2, 3 or 4; ii) a moiety L 2, which is a chemical bond or a spacer, and L 2 is bound to a carrier group Z, which is a polymer with a molecular weight ≥ 500 g/mol, wherein L 1 is substituted with one to four L 2 moieties, optionally, L is further substituted. i) a moiety L 1 represented by formula, wherein the dashed line indicates the attachment of L 1 to the aromatic hydroxyl group of D by forming a carbamate group; R 1 is selected from the group consisting of C 1-4 alkyl; heteroalkyl; C 3-7 cycloalkyl; and R 2, R 2a, R 3, R 3a are independently selected from the group consisting of hydrogen, substituted or non-substituted linear, branched or cyclic C 1-4 alkyl and heteroalkyl; m is independently 2, 3 or 4; wherein the dashed line indicates the attachment of L 1 to the aromatic hydroxyl group of D by forming a carbamate group; R 1 is selected from the group consisting of C 1-4 alkyl; heteroalkyl; C 3-7 cycloalkyl; and R 2, R 2a, R 3, R 3a are independently selected from the group consisting of hydrogen, substituted or non-substituted linear, branched or cyclic C 1-4 alkyl and heteroalkyl; m is independently 2, 3 or 4; R 2, R 2a, R 3, R 3a are independently selected from the group consisting of hydrogen, substituted or non-substituted linear, branched or cyclic C 1-4 alkyl and heteroalkyl; m is independently 2, 3 or 4; ii) a moiety L 2, which is a chemical bond or a spacer, and L 2 is bound to a carrier group Z, which is a polymer with a molecular weight ≥ 500 g/mol, wherein L 1 is substituted with one to four L 2 moieties, optionally, L is further substituted.