diff --git a/src/crypto/flex/flex.cpp b/src/crypto/flex/flex.cpp
index 2fdc56a1..29cf429c 100644
--- a/src/crypto/flex/flex.cpp
+++ b/src/crypto/flex/flex.cpp
@@ -76,7 +76,7 @@ static void selectAlgo(unsigned char nibble, bool* selectedAlgos, uint8_t* selec
 static void getAlgoString(void *mem, unsigned int size, uint8_t* selectedAlgoOutput, int algoCount) {
   unsigned char *p = (unsigned char *)mem;
   unsigned int len = size/2;
-  bool selectedAlgo[algoCount];
+  bool* selectedAlgo = new bool[algoCount];
   for(int z=0; z < algoCount; z++) {
 	  selectedAlgo[z] = false;
   }
@@ -95,6 +95,7 @@ static void getAlgoString(void *mem, unsigned int size, uint8_t* selectedAlgoOut
 		}
 	}
   }
+  delete [] selectedAlgo;
 }
 
 void print_hex_memory(void *mem, unsigned int size) {