diff --git a/rpcs3/Emu/Cell/PPUInterpreter.h b/rpcs3/Emu/Cell/PPUInterpreter.h
index 3413e2f3f0..2a0090c251 100644
--- a/rpcs3/Emu/Cell/PPUInterpreter.h
+++ b/rpcs3/Emu/Cell/PPUInterpreter.h
@@ -3717,7 +3717,7 @@ private:
 	}
 	void FSEL(u32 frd, u32 fra, u32 frc, u32 frb, bool rc)
 	{
-		CPU.FPR[frd] = CPU.FPR[fra] < 0.0 ? CPU.FPR[frc] : CPU.FPR[frb];
+		CPU.FPR[frd] = CPU.FPR[fra] >= 0.0 ? CPU.FPR[frc] : CPU.FPR[frb];
 		if(rc) UNK("fsel.");//CPU.UpdateCR1(CPU.FPR[frd]);
 	}
 	void FMUL(u32 frd, u32 fra, u32 frc, bool rc)
diff --git a/rpcs3/Emu/SysCalls/Modules/sceNpTrophy.cpp b/rpcs3/Emu/SysCalls/Modules/sceNpTrophy.cpp
index bae2bf372b..2198525289 100644
--- a/rpcs3/Emu/SysCalls/Modules/sceNpTrophy.cpp
+++ b/rpcs3/Emu/SysCalls/Modules/sceNpTrophy.cpp
@@ -111,10 +111,16 @@ int sceNpTrophyRegisterContext(u32 context, u32 handle, u32 statusCb_addr, u32 a
 		return SCE_NP_TROPHY_ERROR_INVALID_ARGUMENT;
 	if (options & (~(u64)1))
 		SCE_NP_TROPHY_ERROR_NOT_SUPPORTED;
+	if (context >= s_npTrophyInstance.contexts.size())
+		return SCE_NP_TROPHY_ERROR_UNKNOWN_CONTEXT;
 	// TODO: There are other possible errors
 
-	int ret;
 	sceNpTrophyInternalContext& ctxt = s_npTrophyInstance.contexts[context];
+
+	if (!ctxt.trp_stream)
+		return SCE_NP_TROPHY_ERROR_CONF_DOES_NOT_EXIST;
+
+	int ret;
 	TRPLoader trp(*(ctxt.trp_stream));
 
 	// TODO: Get the path of the current user
@@ -150,11 +156,16 @@ int sceNpTrophyGetRequiredDiskSpace(u32 context, u32 handle, mem64_t reqspace, u
 		return SCE_NP_TROPHY_ERROR_NOT_INITIALIZED;
 	if (!reqspace.IsGood())
 		return SCE_NP_TROPHY_ERROR_INVALID_ARGUMENT;
+	if (context >= s_npTrophyInstance.contexts.size())
+		return SCE_NP_TROPHY_ERROR_UNKNOWN_CONTEXT;
 	// TODO: There are other possible errors
 
 	sceNpTrophyInternalContext& ctxt = s_npTrophyInstance.contexts[context];
-	reqspace = ctxt.trp_stream->GetSize(); // TODO: This is not accurate. It's just an approximation of the real value
 
+	if (!ctxt.trp_stream)
+		return SCE_NP_TROPHY_ERROR_CONF_DOES_NOT_EXIST;
+
+	reqspace = ctxt.trp_stream->GetSize(); // TODO: This is not accurate. It's just an approximation of the real value
 	return CELL_OK;
 }