diff --git a/config.lib b/config.lib
index 17ddd4de5e..ca8346e3e7 100644
--- a/config.lib
+++ b/config.lib
@@ -1450,7 +1450,11 @@ make_cflags_and_ldflags() {
 			LDFLAGS="$LDFLAGS -noixemul"
 		fi
 
-		CFLAGS="-O2 -fomit-frame-pointer $CFLAGS"
+		if [ "$enable_profiling" = "0" ]; then
+			# -fomit-frame-pointer and -pg do not go well together (gcc errors they are incompatible)
+			CFLAGS="-fomit-frame-pointer $CFLAGS"
+		fi
+		CFLAGS="-O2 $CFLAGS"
 	else
 		OBJS_SUBDIR="debug"
 
@@ -1494,7 +1498,7 @@ make_cflags_and_ldflags() {
 	fi
 
 	if [ "$enable_profiling" != "0" ]; then
-		CFLAGS="$CFLAGS -p"
+		CFLAGS="$CFLAGS -pg"
 		LDFLAGS="$LDFLAGS -pg"
 	fi
 
diff --git a/src/airport_gui.cpp b/src/airport_gui.cpp
index 4ad4789ff6..cf8cf26285 100644
--- a/src/airport_gui.cpp
+++ b/src/airport_gui.cpp
@@ -226,8 +226,27 @@ public:
 		this->SetWidgetLoweredState(WID_AP_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
 		this->OnInvalidateData();
 
-		this->vscroll->SetCount(AirportClass::Get(_selected_airport_class)->GetSpecCount());
-		this->SelectFirstAvailableAirport(true);
+		/* Ensure airport class is valid (changing NewGRFs). */
+		_selected_airport_class = Clamp(_selected_airport_class, APC_BEGIN, (AirportClassID)(AirportClass::GetClassCount() - 1));
+		const AirportClass *ac = AirportClass::Get(_selected_airport_class);
+		this->vscroll->SetCount(ac->GetSpecCount());
+
+		/* Ensure the airport index is valid for this class (changing NewGRFs). */
+		_selected_airport_index = Clamp(_selected_airport_index, -1, ac->GetSpecCount() - 1);
+
+		/* Only when no valid airport was selected, we want to select the first airport. */
+		bool selectFirstAirport = true;
+		if (_selected_airport_index != -1) {
+			const AirportSpec *as = ac->GetSpec(_selected_airport_index);
+			if (as->IsAvailable()) {
+				/* Ensure the airport layout is valid. */
+				_selected_airport_layout = Clamp(_selected_airport_layout, 0, as->num_table - 1);
+				selectFirstAirport = false;
+				this->UpdateSelectSize();
+			}
+		}
+
+		if (selectFirstAirport) this->SelectFirstAvailableAirport(true);
 	}
 
 	virtual ~BuildAirportWindow()
diff --git a/src/industry_gui.cpp b/src/industry_gui.cpp
index 7c655bbb3a..f971dea2b9 100644
--- a/src/industry_gui.cpp
+++ b/src/industry_gui.cpp
@@ -2000,7 +2000,7 @@ struct CargoesRow {
 					if (!hs->enabled) continue;
 
 					for (uint j = 0; j < lengthof(hs->accepts_cargo); j++) {
-						if (cargo_fld->u.cargo.vertical_cargoes[i] == hs->accepts_cargo[j]) {
+						if (hs->cargo_acceptance[j] > 0 && cargo_fld->u.cargo.vertical_cargoes[i] == hs->accepts_cargo[j]) {
 							cargo_fld->ConnectCargo(cargo_fld->u.cargo.vertical_cargoes[i], false);
 							goto next_cargo;
 						}
@@ -2192,7 +2192,7 @@ struct IndustryCargoesWindow : public Window {
 				if (!hs->enabled || !(hs->building_availability & climate_mask)) continue;
 
 				for (uint j = 0; j < lengthof(hs->accepts_cargo); j++) {
-					if (cargoes[i] == hs->accepts_cargo[j]) return true;
+					if (hs->cargo_acceptance[j] > 0 && cargoes[i] == hs->accepts_cargo[j]) return true;
 				}
 			}
 		}
diff --git a/src/os/unix/unix.cpp b/src/os/unix/unix.cpp
index c9c98ea9f4..0e2512cab2 100644
--- a/src/os/unix/unix.cpp
+++ b/src/os/unix/unix.cpp
@@ -365,10 +365,10 @@ void OSOpenBrowser(const char *url)
 	if (child_pid != 0) return;
 
 	const char *args[3];
-	args[0] = "/usr/bin/xdg-open";
+	args[0] = "xdg-open";
 	args[1] = url;
 	args[2] = NULL;
-	execv(args[0], const_cast<char * const *>(args));
+	execvp(args[0], const_cast<char * const *>(args));
 	DEBUG(misc, 0, "Failed to open url: %s", url);
 	exit(0);
 }