A modified flavin adenine dinucleotide dependent glucose dehydrogenase that is glycosylated, selected from the group consisting of a (a) modified flavin adenine dinucleotide dependent glucose dehydrogenase having SEQ ID No: 2 that is glycosylated, but wherein at least one of the asparagine residues selected from the group consisting of N2; N168 and N346 according to the mature Aspergillus oryzae FAD-GDH wild-type sequence SEQ ID No: 2 (Wild type) has been substituted by one or more amino acids not suitable for glycosylation and thereby eliminating or inactivating, respectively, a potential glycosylation site at this position and (b) a modified flavin adenine dinucleotide dependent glucose dehydrogenase that is glycosylated that exhibits 80% amino acid sequence identity or more to a modified flavin adenine dinucleotide dependent glucose dehydrogenase consisting of SEQ ID No: 2, but wherein at least one of the asparagine residues selected from the group consisting of N2; N168 and N346 according to the mature Aspergillus oryzae FAD-GDH wild-type sequence SEQ ID No: 2 has been substituted by one or more amino acids not suitable for glycosylation and thereby eliminating or inactivating, respectively, a potential glycosylation site at this position and wherein said asparagine residue has been substituted by S, P, SP or D, and (c) an active fragment of a modified flavin adenine dinucleotide dependent glucose dehydrogenase according to (a) or (b) provided that in the FAD-GDH according to (b) or the fragment according to (c) said substitution(s) eliminating or inactivating said potential glycosylation site(s) is/are preserved when compared to the modified flavin adenine dinucleotide dependent glucose dehydrogenase according to (a) and provided that the flavin adenine dinucleotide dependent glucose dehydrogenase according to (b) or the fragment according to (c) exhibits at least 80% of the enzyme activity of the FAD-GDH according (a) and exhibits at least 80% of the temperature stability under dry conditions of the FAD-GDH according to (a), wherein the expression "exhibits temperature stability under dry conditions" means residual activity of the lyophilizated modified flavin adenine dinucleotide dependent glucose dehydrogenase (FAD-GDH) itself and when comprised in a lyophilizated composition, calculated and compared to the unstressed lyophilizate after: 1) lyophilization and incubation of the lyophilizated enzyme at 80°C for 8 days over molecular sieve (3A, MS551, Grace). (a) modified flavin adenine dinucleotide dependent glucose dehydrogenase having SEQ ID No: 2 that is glycosylated, but wherein at least one of the asparagine residues selected from the group consisting of N2; N168 and N346 according to the mature Aspergillus oryzae FAD-GDH wild-type sequence SEQ ID No: 2 (Wild type) has been substituted by one or more amino acids not suitable for glycosylation and thereby eliminating or inactivating, respectively, a potential glycosylation site at this position and (b) a modified flavin adenine dinucleotide dependent glucose dehydrogenase that is glycosylated that exhibits 80% amino acid sequence identity or more to a modified flavin adenine dinucleotide dependent glucose dehydrogenase consisting of SEQ ID No: 2, but wherein at least one of the asparagine residues selected from the group consisting of N2; N168 and N346 according to the mature Aspergillus oryzae FAD-GDH wild-type sequence SEQ ID No: 2 has been substituted by one or more amino acids not suitable for glycosylation and thereby eliminating or inactivating, respectively, a potential glycosylation site at this position and wherein said asparagine residue has been substituted by S, P, SP or D, and (c) an active fragment of a modified flavin adenine dinucleotide dependent glucose dehydrogenase according to (a) or (b) provided that in the FAD-GDH according to (b) or the fragment according to (c) said substitution(s) eliminating or inactivating said potential glycosylation site(s) is/are preserved when compared to the modified flavin adenine dinucleotide dependent glucose dehydrogenase according to (a) and provided that the flavin adenine dinucleotide dependent glucose dehydrogenase according to (b) or the fragment according to (c) exhibits at least 80% of the enzyme activity of the FAD-GDH according (a) and exhibits at least 80% of the temperature stability under dry conditions of the FAD-GDH according to (a), wherein the expression "exhibits temperature stability under dry conditions" means residual activity of the lyophilizated modified flavin adenine dinucleotide dependent glucose dehydrogenase (FAD-GDH) itself and when comprised in a lyophilizated composition, calculated and compared to the unstressed lyophilizate after: 1) lyophilization and incubation of the lyophilizated enzyme at 80°C for 8 days over molecular sieve (3A, MS551, Grace).