diff --git a/src/Modules/ModulesGraded.jl b/src/Modules/ModulesGraded.jl
index ebc7edb4e102..4da1130caf30 100644
--- a/src/Modules/ModulesGraded.jl
+++ b/src/Modules/ModulesGraded.jl
@@ -2042,10 +2042,12 @@ function minimal_betti_table(res::FreeResolution{T}) where {T<:ModuleFP}
       if d in dom_degs
         _, _, sub_mat = _constant_sub_matrix(phi, d)
         r = rank(sub_mat)
-        betti_hash_table[(i-1, d)] = ncols(sub_mat) - r - get(offsets, d, 0)
+        c = ncols(sub_mat) - r - get(offsets, d, 0)
+        !iszero(c) && (betti_hash_table[(i-1, d)] = c)
         offsets[d] = r
       else
-        betti_hash_table[(i-1, d)] = length(_indices_of_generators_of_degree(G, d)) - get(offsets, d, 0)
+        c = length(_indices_of_generators_of_degree(G, d)) - get(offsets, d, 0)
+        !iszero(c) && (betti_hash_table[(i-1, d)] = c)
       end
     end
   end
diff --git a/test/Modules/ModulesGraded.jl b/test/Modules/ModulesGraded.jl
index 52a84e204989..60a20e2c163e 100644
--- a/test/Modules/ModulesGraded.jl
+++ b/test/Modules/ModulesGraded.jl
@@ -1118,9 +1118,9 @@ end
   # To reproduce the string on the right hand side, evaluate 
   #   `"$(oscar.minimal_betti_table(M))"` 
   # and insert the result here; after verification of the result!
-  @test "$(oscar.minimal_betti_table(A))" == "       0  1  2  3  4  \n---------------------\n0    : 1  -  -  -  -  \n1    : -  -  -  -  -  \n2    : -  7  10 5  1  \n3    : -  -  -  -  -  \n4    : -  -  -  -  -  \n---------------------\ntotal: 1  7  10 5  1  \n"
+  @test "$(oscar.minimal_betti_table(A))" == "       0  1  2  3  4  \n---------------------\n0    : 1  -  -  -  -  \n1    : -  -  -  -  -  \n2    : -  7  10 5  1  \n---------------------\ntotal: 1  7  10 5  1  \n"
 
-  @test "$(oscar.minimal_betti_table(M))" == "       0  1  2  3  4  \n---------------------\n0    : 1  -  -  -  -  \n1    : -  -  -  -  -  \n2    : -  7  10 5  1  \n3    : -  -  -  -  -  \n4    : -  -  -  -  -  \n---------------------\ntotal: 1  7  10 5  1  \n"
+  @test "$(oscar.minimal_betti_table(M))" == "       0  1  2  3  4  \n---------------------\n0    : 1  -  -  -  -  \n1    : -  -  -  -  -  \n2    : -  7  10 5  1  \n---------------------\ntotal: 1  7  10 5  1  \n"
 
   @test "$(oscar.minimal_betti_table(I))" == "$(oscar.minimal_betti_table(sub_F))"