diff --git a/src/driver/simple_display.cpp b/src/driver/simple_display.cpp
index 569dc5b53..19a7d0c9d 100644
--- a/src/driver/simple_display.cpp
+++ b/src/driver/simple_display.cpp
@@ -26,6 +26,7 @@
 
 #include <driver/simple_display.h>
 #include <driver/framebuffer.h>
+#include <system/proc_tools.h>
 #include <system/set_threadname.h>
 
 #include <global.h>
@@ -62,20 +63,6 @@ static bool timer_icon = false;
 #include <system/helpers.h>
 static bool usb_icon = false;
 static bool timer_icon = false;
-static int proc_put(const char *path, bool state)
-{
-	int ret, ret2;
-	int pfd = open(path, O_WRONLY);
-	if (pfd < 0)
-		return pfd;
-	ret = write(pfd, state ? "1" : "0", 1);
-	ret2 = close(pfd);
-	if (ret2 < 0)
-		return ret2;
-	return ret;
-}
-#else
-static int proc_put(const char *, bool) {return 0;}
 #endif
 
 static char volume = 0;
@@ -558,10 +545,7 @@ void CLCD::setBrightness(int dimm)
 	}
 #elif HAVE_ARM_HARDWARE
 	std::string value = to_string(255/15*dimm);
-	int pfd = open("/proc/stb/lcd/oled_brightness", O_WRONLY);
-	if (pfd)
-		write(pfd, value.c_str(), value.length());
-	close(pfd);
+	proc_put("/proc/stb/lcd/oled_brightness", value.c_str(), value.length());
 #else
 	(void)dimm; // avoid compiler warning
 #endif
@@ -807,7 +791,7 @@ void CLCD::ShowIcon(fp_icon i, bool on)
 			led_r = on;
 			if (g_info.hw_caps->display_type == HW_DISPLAY_LINE_TEXT) {
 				SetIcons(SPARK_REC1, on);
-				proc_put("/proc/stb/lcd/symbol_recording",on);}
+				proc_put("/proc/stb/lcd/symbol_recording", on ? "1" : "0", 1);}
 			else
 				setled(led_r, -1); /* switch instant on / switch off if disabling */
 			break;
@@ -815,18 +799,18 @@ void CLCD::ShowIcon(fp_icon i, bool on)
 			led_g = on;
 			if (g_info.hw_caps->display_type == HW_DISPLAY_LINE_TEXT) {
 				SetIcons(SPARK_PLAY, on);
-				proc_put("/proc/stb/lcd/symbol_playback",on);}
+				proc_put("/proc/stb/lcd/symbol_playback", on ? "1" : "0", 1);}
 			else
 				setled(-1, led_g);
 			break;
 		case FP_ICON_USB:
 			usb_icon = on;
 			SetIcons(SPARK_USB, on);
-			proc_put("/proc/stb/lcd/symbol_usb",on);
+			proc_put("/proc/stb/lcd/symbol_usb", on ? "1" : "0", 1);
 			break;
 		case FP_ICON_HDD:
 			SetIcons(SPARK_HDD, on);
-			proc_put("/proc/stb/lcd/symbol_hdd",on);
+			proc_put("/proc/stb/lcd/symbol_hdd", on ? "1" : "0", 1);
 			break;
 		case FP_ICON_PAUSE:
 			SetIcons(SPARK_PAUSE, on);
@@ -843,14 +827,14 @@ void CLCD::ShowIcon(fp_icon i, bool on)
 			break;
 		case FP_ICON_LOCK:
 			SetIcons(SPARK_CA, on);
-			proc_put("/proc/stb/lcd/symbol_scrambled",on);
+			proc_put("/proc/stb/lcd/symbol_scrambled", on ? "1" : "0", 1);
 			break;
 		case FP_ICON_RADIO:
 			SetIcons(SPARK_AUDIO, on);
 			break;
 		case FP_ICON_TV:
 			SetIcons(SPARK_TVMODE_LOG, on);
-			proc_put("/proc/stb/lcd/symbol_tv",on);
+			proc_put("/proc/stb/lcd/symbol_tv", on ? "1" : "0", 1);
 			break;
 		case FP_ICON_HD:
 			SetIcons(SPARK_DOUBLESCREEN, on);
@@ -858,14 +842,14 @@ void CLCD::ShowIcon(fp_icon i, bool on)
 		case FP_ICON_CLOCK:
 			timer_icon = on;
 			SetIcons(SPARK_CLOCK, on);
-			proc_put("/proc/stb/lcd/symbol_timeshift",on);
+			proc_put("/proc/stb/lcd/symbol_timeshift", on ? "1" : "0", 1);
 			break;
 		default:
 			break;
 	}
 }
 
-void CVFD::ShowText(const char * str, bool update_timestamp)
+void CLCD::ShowText(const char * str, bool update_timestamp)
 {
 	int fd = dev_open();
 	int len = strlen(str);