diff --git a/.gitignore b/.gitignore
index 97e6a6f..9433518 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 *.jl.*.cov
 *.jl.mem
 /Manifest.toml
+.vscode
\ No newline at end of file
diff --git a/src/PageAlignedArrays.jl b/src/PageAlignedArrays.jl
index ccad833..981f7d3 100644
--- a/src/PageAlignedArrays.jl
+++ b/src/PageAlignedArrays.jl
@@ -71,9 +71,9 @@ function virtualfree(addr::Ptr{T}) where {T}
         return ccall((:VirtualFree, "Kernel32"), Cint, (Ptr{Cvoid}, Csize_t, Culong),
             addr, 0, MEM_RELEASE)
     end : @static Base.Sys.islinux() ? begin
-        return ccall(:free, Void, (Ptr{Cvoid},), addr)
+        return ccall(:free, Cvoid, (Ptr{Cvoid},), addr)
     end : @static Base.Sys.isapple() ? begin
-        return ccall((:free, "libSystem.dylib"), Void, (Ptr{Cvoid},), addr)
+        return ccall((:free, "libSystem.dylib"), Cvoid, (Ptr{Cvoid},), addr)
     end : error("OS not supported")
 end
 end # module