diff --git a/LuaLibs/RunMachiningParamCalc.lua b/LuaLibs/RunMachiningParamCalc.lua
index 2dcdc6a..c7dffb0 100644
--- a/LuaLibs/RunMachiningParamCalc.lua
+++ b/LuaLibs/RunMachiningParamCalc.lua
@@ -177,7 +177,7 @@ function RunMachiningParamCalc.Exec()
       end
       file:close()
       local sReadProgPath = EgtGetStringFromIni( '3dPrinting', RESULT_READ_PROG, "", EgtGetIniFile())
-      if not sReadProgPath or not EgtWinExec( sReadProgPath .. ' ' .. sResultFile) then
+      if not sReadProgPath or not EgtWinExec( '"'..sReadProgPath..'" "'..sResultFile..'"') then
          EgtOutBox( 'Impossible opening software to show results. You can find them in ' .. sResultFile, 'Error', 'ERROR')
       end
    else
diff --git a/LuaLibs/RunMachiningParamEdit.lua b/LuaLibs/RunMachiningParamEdit.lua
index f5614bf..79e32da 100644
--- a/LuaLibs/RunMachiningParamEdit.lua
+++ b/LuaLibs/RunMachiningParamEdit.lua
@@ -46,7 +46,7 @@ function RunMachiningParamEdit.Exec()
 
    -- apro programma di edit
    local sEditProgPath = EgtGetStringFromIni( '3dPrinting', 'MachiningEditProg', "", EgtGetIniFile())
-   if not sEditProgPath or not EgtWinExec( sEditProgPath .. ' ' .. sSelMachiningPath) then
+   if not sEditProgPath or not EgtWinExec( '"'..sEditProgPath..'" "'.. sSelMachiningPath..'"') then
       EgtOutBox( 'Impossible opening software to show Machining. You can find it in ' .. sSelMachiningPath, 'Error', 'ERROR')
    end
 
diff --git a/LuaLibs/RunMaterialParamEdit.lua b/LuaLibs/RunMaterialParamEdit.lua
index 0e76d4b..885db86 100644
--- a/LuaLibs/RunMaterialParamEdit.lua
+++ b/LuaLibs/RunMaterialParamEdit.lua
@@ -45,7 +45,7 @@ function RunMaterialParamEdit.Exec()
 
    -- apro programma di edit
    local sEditProgPath = EgtGetStringFromIni( '3dPrinting', RESULT_READ_PROG, "", EgtGetIniFile())
-   if not sEditProgPath or not EgtWinExec( sEditProgPath .. ' ' .. sSelMaterialPath) then
+   if not sEditProgPath or not EgtWinExec( '"'..sEditProgPath..'" "'..sSelMaterialPath..'"') then
       EgtOutBox( 'Impossible opening software to show Material. You can find them it in ' .. sSelMaterialPath, 'Error', 'ERROR')
    end