diff --git a/src/arm/midr.c b/src/arm/midr.c
index 8391147..b9d2289 100644
--- a/src/arm/midr.c
+++ b/src/arm/midr.c
@@ -48,6 +48,7 @@ struct cache* get_cache_info(struct cpuInfo* cpu) {
   cach->max_cache_level = 2;
   for(int i=0; i < cach->max_cache_level + 1; i++) {
     cach->cach_arr[i]->exists = true;
+    cach->cach_arr[i]->num_caches = 1;
     cach->cach_arr[i]->size = 0;
   }
 
diff --git a/src/common/cpu.c b/src/common/cpu.c
index c622248..8b0b7e0 100755
--- a/src/common/cpu.c
+++ b/src/common/cpu.c
@@ -150,12 +150,15 @@ char* get_str_freq(struct frequency* freq) {
   uint32_t size = (4+3+1);
   assert(strlen(STRING_UNKNOWN)+1 <= size);
   char* string = malloc(sizeof(char)*size);
+  memset(string, 0, sizeof(char)*size);
+  
   if(freq->max == UNKNOWN_FREQ)
     snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
   else if(freq->max >= 1000)
     snprintf(string,size,"%.2f"STRING_GIGAHERZ,(float)(freq->max)/1000);
   else
-    snprintf(string,size,"%.2f"STRING_MEGAHERZ,(float)(freq->max));
+    snprintf(string,size,"%lld"STRING_MEGAHERZ,freq->max);
+  
   return string;
 }
 
diff --git a/src/common/printer.c b/src/common/printer.c
index 81097d6..dc093a3 100644
--- a/src/common/printer.c
+++ b/src/common/printer.c
@@ -563,13 +563,7 @@ bool print_cpufetch_arm(struct ascii* art, struct cpuInfo* cpu, struct colors* c
     setAttribute(art,ATTRIBUTE_L2,l2);
     if(l3 != NULL) {
       setAttribute(art,ATTRIBUTE_L3,l3);
-      free(l3);
     }
-    
-    free(max_frequency);
-    free(l1i);
-    free(l1d);
-    free(l2);
   }
   else {
     struct cpuInfo* ptr = cpu;
diff --git a/src/common/udev.c b/src/common/udev.c
index d790d05..87c53df 100644
--- a/src/common/udev.c
+++ b/src/common/udev.c
@@ -129,6 +129,7 @@ int get_ncores_from_cpuinfo() {
   char* tmp1 = strstr(buf, "-") + 1;
   char* tmp2 = strstr(buf, "\n");
   char ncores_str[offset];
+  memset(ncores_str, 0, sizeof(char) * offset);
   memcpy(ncores_str, tmp1, tmp2-tmp1);
   
   char* end;