diff --git a/include/internal/launch.hpp.cog b/include/internal/launch.hpp.cog
index 157775c..65c45b4 100644
--- a/include/internal/launch.hpp.cog
+++ b/include/internal/launch.hpp.cog
@@ -12,7 +12,6 @@ using namespace cellar::commands;
 
 namespace cellar {
     namespace launch {
-        extern void popen(string);
         extern void popen(vector<string>);
 
     /*[[[cog
diff --git a/src/bottles/create.cpp b/src/bottles/create.cpp
index e62e478..b70dbe4 100644
--- a/src/bottles/create.cpp
+++ b/src/bottles/create.cpp
@@ -79,7 +79,9 @@ void cellar::bottles::create_bottle(int argc, vector<string> argv) {
             output::statement("creating template bottle from scratch");
             if (!dryrun) {
                 setenv("WINEPREFIX", fullbottlepath.c_str(), 1);
-                launch::popen("wineboot -u");
+                vector<string> wineboot;
+                wineboot.push_back("wineboot"); wineboot.push_back("-u");
+                launch::popen(wineboot);
             }
         }
     }
diff --git a/src/launch/winetricks.cpp b/src/launch/winetricks.cpp
index 123a672..d3149fa 100644
--- a/src/launch/winetricks.cpp
+++ b/src/launch/winetricks.cpp
@@ -21,9 +21,8 @@ void cellar::launch::winetricks(int argc, vector<string> argv) {
 
     auto winetricks_argv = argv;
     winetricks_argv[0] = "winetricks";
-    string winetricks_str = boost::algorithm::join(winetricks_argv, " ");
     //output::statement(winetricks_str);
-    launch::popen(winetricks_str);
+    launch::popen(winetricks_argv);
 
     if (bottles::active_bottle.config.find("winetricks") == bottles::active_bottle.config.end()) {
         bottles::active_bottle.config.emplace("winetricks", vector<string>());