diff --git a/examples/IsPower.jl b/examples/IsPower.jl
index cbdb4cd986..25958843e9 100644
--- a/examples/IsPower.jl
+++ b/examples/IsPower.jl
@@ -312,11 +312,11 @@ function Base.getindex(H::Hecke.HenselCtx, s::Symbol, i::Int)
     return unsafe_load(H.link, i)
   elseif s == :v
     f = Hecke.Globals.Zx()
-    @GC.preserve f H ccall((:fmpz_poly_set, Nemo.libflint), Cvoid, (Ref{ZZPolyRingElem}, Ptr{Hecke.fmpz_poly_raw}), f, H.v+(i-1)*sizeof(Hecke.fmpz_poly_raw))
+    GC.@preserve f H ccall((:fmpz_poly_set, Nemo.libflint), Cvoid, (Ref{ZZPolyRingElem}, Ptr{Hecke.fmpz_poly_raw}), f, H.v+(i-1)*sizeof(Hecke.fmpz_poly_raw))
     return f
   elseif s == :w
     f = Hecke.Globals.Zx()
-    @GC.preserve f H ccall((:fmpz_poly_set, Nemo.libflint), Cvoid, (Ref{ZZPolyRingElem}, Ptr{Hecke.fmpz_poly_raw}), f, H.w+(i-1)*sizeof(Hecke.fmpz_poly_raw))
+    GC.@preserve f H ccall((:fmpz_poly_set, Nemo.libflint), Cvoid, (Ref{ZZPolyRingElem}, Ptr{Hecke.fmpz_poly_raw}), f, H.w+(i-1)*sizeof(Hecke.fmpz_poly_raw))
     return f
   end
 end
diff --git a/src/Misc/Matrix.jl b/src/Misc/Matrix.jl
index 74d2c17f4b..e921eae7f8 100644
--- a/src/Misc/Matrix.jl
+++ b/src/Misc/Matrix.jl
@@ -325,7 +325,7 @@ end
 
 # Copy B into A at position (i, j)
 function _copy_matrix_into_matrix(A::ZZMatrix, i::Int, j::Int, B::ZZMatrix)
-  @GC.preserve A B begin
+  GC.@preserve A B begin
     for k in 0:nrows(B) - 1
       for l in 0:ncols(B) - 1
         d = mat_entry_ptr(B, 1 + k, 1 + l)
@@ -337,7 +337,7 @@ function _copy_matrix_into_matrix(A::ZZMatrix, i::Int, j::Int, B::ZZMatrix)
 end
 
 function _copy_matrix_into_matrix(A::QQMatrix, i::Int, j::Int, B::QQMatrix)
-  @GC.preserve A B begin
+  GC.@preserve A B begin
     for k in 0:nrows(B) - 1
       for l in 0:ncols(B) - 1
         d = mat_entry_ptr(B, 1 + k, 1 + l)
diff --git a/src/QuadForm/LineOrbits.jl b/src/QuadForm/LineOrbits.jl
index 70249d0172..4a07c959cd 100644
--- a/src/QuadForm/LineOrbits.jl
+++ b/src/QuadForm/LineOrbits.jl
@@ -416,7 +416,7 @@ end
 
 function _normalize!(x::fpMatrix)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     piv = 0
     local ell
     for j in 1:ncols(x)
@@ -474,7 +474,7 @@ end
 
 function _normalize!(x::MatElem{FpFieldElem})
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     piv = 0
     local ell
     for j in 1:ncols(x)
@@ -533,7 +533,7 @@ end
 
 function _isequal(x::fqPolyRepMatrix, y::Vector{fqPolyRepFieldElem})
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:length(y)
       el = mat_entry_ptr(x, 1, i)
       b = ccall((:fq_nmod_equal, libflint), Cint, (Ref{fqPolyRepFieldElem}, Ptr{fqPolyRepFieldElem}, Ref{fqPolyRepField}), y[i], el, R)
@@ -548,7 +548,7 @@ end
 
 function _muleq!(x::fqPolyRepMatrix, y::fqPolyRepFieldElem)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:nrows(x)
       for j in 1:ncols(x)
         el = mat_entry_ptr(x, i, j)
@@ -561,7 +561,7 @@ end
 
 function _normalize!(x::fqPolyRepMatrix)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     piv = 0
     local ell
     for j in 1:ncols(x)
@@ -629,7 +629,7 @@ end
 function _isless(x::Vector{fqPolyRepFieldElem}, y::fqPolyRepMatrix)
   d = length(x)
   R = base_ring(y)
-  @GC.preserve y begin
+  GC.@preserve y begin
     for i in 1:d
       xi = x[i]
       el = mat_entry_ptr(y, 1, i)
@@ -655,7 +655,7 @@ end
 
 function _isequal(x::FqPolyRepMatrix, y::Vector{FqPolyRepFieldElem})
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:length(y)
       el = mat_entry_ptr(x, 1, i)
       b = ccall((:fq_equal, libflint), Cint,
@@ -671,7 +671,7 @@ end
 
 function _muleq!(x::FqPolyRepMatrix, y::FqPolyRepFieldElem)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:nrows(x)
       for j in 1:ncols(x)
         el = mat_entry_ptr(x, i, j)
@@ -685,7 +685,7 @@ end
 
 function _normalize!(x::FqPolyRepMatrix)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     piv = 0
     local ell
     for j in 1:ncols(x)
@@ -758,7 +758,7 @@ end
 function _isless(x::Vector{FqPolyRepFieldElem}, y::FqPolyRepMatrix, tx::ZZRingElem = ZZRingElem(), ty::ZZRingElem = ZZRingElem())
   d = length(x)
   R = base_ring(y)
-  @GC.preserve y begin
+  GC.@preserve y begin
     for i in 1:d
       xi = x[i]
       el = mat_entry_ptr(y, 1, i)
@@ -791,7 +791,7 @@ end
 
 function _isequal(x::FqMatrix, y::Vector{FqFieldElem})
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:length(y)
       el = mat_entry_ptr(x, 1, i)
       b = ccall((:fq_default_equal, libflint), Cint,
@@ -807,7 +807,7 @@ end
 
 function _muleq!(x::FqMatrix, y::FqFieldElem)
   R = base_ring(x)
-  @GC.preserve x begin
+  GC.@preserve x begin
     for i in 1:nrows(x)
       for j in 1:ncols(x)
         el = Nemo.fq_default_mat_entry_ptr(x, i, j)
@@ -823,7 +823,7 @@ function _normalize!(x::FqMatrix)
   R = base_ring(x)
   piv = 0
   local ell
-  @GC.preserve x begin
+  GC.@preserve x begin
     for j in 1:ncols(x)
       el = Nemo.fq_default_mat_entry_ptr(x, 1, j)
       b = ccall((:fq_default_is_zero, libflint), Cint,
@@ -895,7 +895,7 @@ end
 function _isless(x::Vector{FqFieldElem}, y::FqMatrix, tx::ZZRingElem = ZZRingElem(), ty::ZZRingElem = ZZRingElem())
   d = length(x)
   R = base_ring(y)
-  @GC.preserve y begin
+  GC.@preserve y begin
     for i in 1:d
       xi = x[i]
       el = Nemo.fq_default_mat_entry_ptr(y, 1, i)