diff --git a/code/ryzom/client/src/client_sheets/sbrick_sheet.cpp b/code/ryzom/client/src/client_sheets/sbrick_sheet.cpp
index c60d1c03c..6eae652df 100644
--- a/code/ryzom/client/src/client_sheets/sbrick_sheet.cpp
+++ b/code/ryzom/client/src/client_sheets/sbrick_sheet.cpp
@@ -353,6 +353,27 @@ void CSBrickSheet::build (const NLGEORGES::UFormElm &root)
 	listSkill.clear();
 	splitString(skillReqStr," ",listSkill);
 	// build the req skill array
+	RequiredOneOfSkills.clear();
+	RequiredOneOfSkills.reserve(listSkill.size()/2);
+	for(i=0;i<listSkill.size()/2;i++)
+	{
+		CSkillValue		sv;
+		sv.Skill= SKILLS::toSkill(listSkill[i*2]);
+		fromString(listSkill[i*2+1], sv.Value);
+		// keep only whats work
+		if(sv.Skill!=SKILLS::unknown)
+		{
+			RequiredOneOfSkills.push_back(sv);
+		}
+	}
+
+	// parse the sheet str
+	skillReqStr.clear();
+	TRANSLATE_VAL(skillReqStr, "Basics.LearnRequiresSkills");
+	while(strFindReplace(skillReqStr, ":", " "));
+	listSkill.clear();
+	splitString(skillReqStr," ",listSkill);
+	// build the req skill array
 	RequiredSkills.clear();
 	RequiredSkills.reserve(listSkill.size()/2);
 	for(i=0;i<listSkill.size()/2;i++)
diff --git a/code/ryzom/client/src/client_sheets/sbrick_sheet.h b/code/ryzom/client/src/client_sheets/sbrick_sheet.h
index e44d4d5f5..7c214a42b 100644
--- a/code/ryzom/client/src/client_sheets/sbrick_sheet.h
+++ b/code/ryzom/client/src/client_sheets/sbrick_sheet.h
@@ -236,7 +236,10 @@ public:
 	// The Action Nature
 	ACTNATURE::TActionNature		ActionNature;
 
-	// For Progression, the required skill
+	// For Progression, the required skills (at least one)
+	std::vector<CSkillValue>		RequiredOneOfSkills;
+
+	// For Progression, the required skills (all of them)
 	std::vector<CSkillValue>		RequiredSkills;
 
 	// For Progression, the required Bricks
@@ -384,6 +387,8 @@ public:
 
 		s.serialEnum(ActionNature);
 
+		s.serialCont(RequiredOneOfSkills);
+
 		s.serialCont(RequiredSkills);
 
 		s.serialCont(RequiredBricks);
diff --git a/code/ryzom/client/src/interface_v3/sphrase_manager.cpp b/code/ryzom/client/src/interface_v3/sphrase_manager.cpp
index 09cc9b3fe..678291e19 100644
--- a/code/ryzom/client/src/interface_v3/sphrase_manager.cpp
+++ b/code/ryzom/client/src/interface_v3/sphrase_manager.cpp
@@ -3697,12 +3697,20 @@ void				CSPhraseManager::computePhraseProgression()
 					CReqSkillFormula	brickFormula;
 
 					// get all its required Skill
+					for(uint j=0;j<brick->RequiredOneOfSkills.size();j++)
+					{
+						CSkillValue		sv;
+						sv.Skill= brick->RequiredOneOfSkills[j].Skill;
+						sv.Value= brick->RequiredOneOfSkills[j].Value;
+						brickFormula.orV(sv);
+					}
+
 					for(uint j=0;j<brick->RequiredSkills.size();j++)
 					{
 						CSkillValue		sv;
 						sv.Skill= brick->RequiredSkills[j].Skill;
 						sv.Value= brick->RequiredSkills[j].Value;
-						brickFormula.orV(sv);
+						brickFormula.andV(sv);
 					}
 
 					// if not empty
diff --git a/code/ryzom/client/src/sheet_manager.cpp b/code/ryzom/client/src/sheet_manager.cpp
index 57de199a2..4badb2a6b 100644
--- a/code/ryzom/client/src/sheet_manager.cpp
+++ b/code/ryzom/client/src/sheet_manager.cpp
@@ -113,7 +113,7 @@ CTypeVersion TypeVersion [] =
 	CTypeVersion("world",                   1),
 	CTypeVersion("weather_function_params", 2),
 	CTypeVersion("mission_icon",            0),
-	CTypeVersion("sbrick",                  32),
+	CTypeVersion("sbrick",                  33),
 	CTypeVersion("sphrase",                 4),
 	CTypeVersion("skill_tree",              5),
 	CTypeVersion("titles",					1),