diff --git a/apps/rebar/src/rebar_packages.erl b/apps/rebar/src/rebar_packages.erl
index 7aa9c1940..445d7a06c 100644
--- a/apps/rebar/src/rebar_packages.erl
+++ b/apps/rebar/src/rebar_packages.erl
@@ -392,7 +392,7 @@ resolve_version_(Dep, DepVsn, Repo, HexRegistry, State) ->
     end.
 
 process_vsn(Vsn) ->
-    [Vsn1|_] = string:split(Vsn, <<"or">>),
+    [Vsn1|_] = string:split(Vsn, <<" or ">>),
     Vsn2 = string:trim(Vsn1),
     ec_semver:parse(Vsn2).
 
diff --git a/apps/rebar/test/rebar_deps_SUITE.erl b/apps/rebar/test/rebar_deps_SUITE.erl
index 2f686fa41..84e4b9e7a 100644
--- a/apps/rebar/test/rebar_deps_SUITE.erl
+++ b/apps/rebar/test/rebar_deps_SUITE.erl
@@ -500,6 +500,7 @@ valid_version(_Config) ->
     ?assert(rebar_packages:valid_vsn(<<"~> 0.1.0">>)),
     ?assert(rebar_packages:valid_vsn(<<"~>  0.1.0">>)),
     ?assert(rebar_packages:valid_vsn(<<"~> 0.1 or 0.5">>)),
+    ?assert(rebar_packages:valid_vsn(<<"~> 0.1-or-something">>)),
     ?assertNot(rebar_packages:valid_vsn(<<"> 0.1.0 and < 0.2.0">>)),
     ok.
 
diff --git a/apps/rebar/test/rebar_pkg_repos_SUITE.erl b/apps/rebar/test/rebar_pkg_repos_SUITE.erl
index 1a29fc63d..646fb20d3 100644
--- a/apps/rebar/test/rebar_pkg_repos_SUITE.erl
+++ b/apps/rebar/test/rebar_pkg_repos_SUITE.erl
@@ -14,7 +14,9 @@ all() ->
 
 groups() ->
     [{resolve_version, [use_first_repo_match, use_exact_with_hash, fail_repo_update,
-                        ignore_match_in_excluded_repo, optional_prereleases]}].
+                        ignore_match_in_excluded_repo, optional_prereleases,
+                        or_in_prerelease
+                       ]}].
 
 init_per_group(resolve_version, Config) ->
     Repo1 = <<"test-repo-1">>,
@@ -106,7 +108,7 @@ init_per_testcase(ignore_match_in_excluded_repo, Config) ->
                 fun(_State) -> true end),
 
     [{state, State} | Config];
-init_per_testcase(optional_prereleases, Config) ->
+init_per_testcase(Case, Config) when Case =:= optional_prereleases; Case =:= or_in_prerelease ->
     Deps = ?config(deps, Config),
     Repos = ?config(repos, Config),
 
@@ -459,6 +461,24 @@ optional_prereleases(Config) ->
                  rebar_packages:resolve_version(<<"B">>, <<"~> 1.5.0">>, <<"inner checksum">>, <<"outer checksum">>,
                                                 ?PACKAGE_TABLE, State1)).
 
+or_in_prerelease(Config) ->
+    State = ?config(state, Config),
+
+    ?assertMatch({ok,{package,{<<"B">>, {{1,5,0}, {[],[]}}, Hexpm},
+                     <<"inner checksum">>,<<"outer checksum">>, false, []},
+                  #{name := Hexpm,
+                    http_adapter := {rebar_httpc_adapter, #{profile := rebar}}}},
+                 rebar_packages:resolve_version(<<"B">>, <<"~> 1.5.0">>, undefined, undefined,
+                                                ?PACKAGE_TABLE, State)),
+
+    State1 = rebar_state:set(State, deps_allow_prerelease, true),
+    ?assertMatch({ok,{package,{<<"B">>, {{1,5,6}, {[<<"rc">>,0],[]}}, Hexpm},
+                      <<"inner checksum">>,<<"outer checksum">>, true, []},
+                  #{name := Hexpm,
+                    http_adapter := {rebar_httpc_adapter, #{profile := rebar}}}},
+                 rebar_packages:resolve_version(<<"B">>, <<"~> 1.5.5-a-or-b.0">>, <<"inner checksum">>, <<"outer checksum">>,
+                                                ?PACKAGE_TABLE, State1)).
+
 %%
 
 setup_deps_and_repos(Deps, Repos) ->