diff --git a/cores/esp32/Arduino.h b/cores/esp32/Arduino.h
index e915d678..192aa7e5 100644
--- a/cores/esp32/Arduino.h
+++ b/cores/esp32/Arduino.h
@@ -115,10 +115,6 @@ typedef bool boolean;
 typedef uint8_t byte;
 typedef unsigned int word;
 
-#ifdef __cplusplus
-long random(long, long);
-#endif
-void randomSeed(unsigned long);
 long map(long, long, long, long, long);
 
 #ifdef __cplusplus
@@ -155,8 +151,6 @@ uint16_t makeWord(byte h, byte l);
 unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
 unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout = 1000000L);
 
-// WMath prototypes
-long random(long);
 #endif /* __cplusplus */
 
 #define _min(a,b) ((a)<(b)?(a):(b))
diff --git a/cores/esp32/WMath.cpp b/cores/esp32/WMath.cpp
index d351b194..ebbd20c1 100644
--- a/cores/esp32/WMath.cpp
+++ b/cores/esp32/WMath.cpp
@@ -24,47 +24,9 @@
  */
 
 extern "C" {
-#include <stdlib.h>
 #include "esp_system.h"
 }
 
-void randomSeed(unsigned long seed)
-{
-    if(seed != 0) {
-        srand(seed);
-    }
-}
-
-long random(long howbig)
-{
-    uint32_t x = esp_random();
-    uint64_t m = uint64_t(x) * uint64_t(howbig);
-    uint32_t l = uint32_t(m);
-    if (l < howbig) {
-        uint32_t t = -howbig;
-        if (t >= howbig) {
-            t -= howbig;
-            if (t >= howbig)
-                t %= howbig;
-        }
-        while (l < t) {
-            x = esp_random();
-            m = uint64_t(x) * uint64_t(howbig);
-            l = uint32_t(m);
-        }
-    }
-    return m >> 32;
-}
-
-long random(long howsmall, long howbig)
-{
-    if(howsmall >= howbig) {
-        return howsmall;
-    }
-    long diff = howbig - howsmall;
-    return random(diff) + howsmall;
-}
-
 long map(long x, long in_min, long in_max, long out_min, long out_max) {
     const long dividend = out_max - out_min;
     const long divisor = in_max - in_min;