diff --git a/Makefile b/Makefile
index c02ab26..ce5b00d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 CXX=gcc
 
 CXXFLAGS=-Wall -Wextra -Werror -pedantic -fstack-protector-all -pedantic -std=c99
-SANITY_FLAGS=-Wfloat-equal -Wshadow -Wpointer-arith 
+SANITY_FLAGS=-Wfloat-equal -Wshadow -Wpointer-arith -Wno-stringop-truncation
 
 SRC_COMMON=src/common/
 
diff --git a/src/arm/midr.c b/src/arm/midr.c
index 0a0168a..64d175f 100644
--- a/src/arm/midr.c
+++ b/src/arm/midr.c
@@ -125,10 +125,12 @@ void init_cpu_info(struct cpuInfo* cpu) {
 // We assume all cpus share the same hardware
 // capabilities but I'm not sure it is always
 // true...
+// ARM32 https://elixir.bootlin.com/linux/latest/source/arch/arm/include/uapi/asm/hwcap.h
+// ARM64 https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/uapi/asm/hwcap.h
 struct features* get_features_info() {
   struct features* feat = malloc(sizeof(struct features));
   bool *ptr = &(feat->AES);
-  for(int i = 0; i < sizeof(struct features)/sizeof(bool); i++, *ptr++) {
+  for(uint32_t i = 0; i < sizeof(struct features)/sizeof(bool); i++, ptr++) {
     *ptr = false;
   }
   
diff --git a/src/common/cpu.c b/src/common/cpu.c
index 03caccf..dd47ac2 100755
--- a/src/common/cpu.c
+++ b/src/common/cpu.c
@@ -152,7 +152,7 @@ char* get_str_freq(struct frequency* freq) {
   char* string = malloc(sizeof(char)*size);
   memset(string, 0, sizeof(char)*size);
   
-  if(freq->max == UNKNOWN_FREQ)
+  if(freq->max == UNKNOWN_FREQ || freq->max < 0)
     snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
   else if(freq->max >= 1000)
     snprintf(string,size,"%.2f"STRING_GIGAHERZ,(float)(freq->max)/1000);
diff --git a/src/common/printer.c b/src/common/printer.c
index 23fef13..855ec53 100644
--- a/src/common/printer.c
+++ b/src/common/printer.c
@@ -172,6 +172,10 @@ struct ascii* set_ascii(VENDOR vendor, STYLE style, struct colors* cs) {
     COL_FANCY_4 = COLOR_FG_GREEN;    
     art->ascii_chars[0] = '@';
   }
+  else {
+    printBug("Invalid CPU vendor in set_ascii (%d)", art->vendor);    
+    return NULL;
+  }
 #elif ARCH_ARM
   if(art->vendor == SOC_SNAPDRAGON) {
     COL_FANCY_1 = COLOR_BG_RED;
diff --git a/src/x86/cpuid.c b/src/x86/cpuid.c
index 02624e8..f064681 100755
--- a/src/x86/cpuid.c
+++ b/src/x86/cpuid.c
@@ -211,7 +211,7 @@ struct cpuInfo* get_cpu_info() {
   cpu->feat = feat;
   
   bool *ptr = &(feat->AES);
-  for(int i = 0; i < sizeof(struct features)/sizeof(bool); i++, *ptr++) {
+  for(uint32_t i = 0; i < sizeof(struct features)/sizeof(bool); i++, ptr++) {
     *ptr = false;
   }