diff --git a/src/btchip_apdu_hash_input_finalize_full.c b/src/btchip_apdu_hash_input_finalize_full.c
index 56c798a8..27a3f412 100644
--- a/src/btchip_apdu_hash_input_finalize_full.c
+++ b/src/btchip_apdu_hash_input_finalize_full.c
@@ -313,10 +313,10 @@ unsigned short btchip_apdu_hash_input_finalize_full_internal(
                 btchip_context_D.tmpCtx.output.changeInitialized = 1;
                 btchip_context_D.tmpCtx.output.changeAccepted = 0;
 
-                // if the bip44 change path provided is not canonical or its index are unsual, ask for user approval
+                // if the bip44 change path provided is not canonical or its index are unusual, ask for user approval
                 if(bip44_derivation_guard(transactionSummary->keyPath, true)) {
                     if (btchip_context_D.called_from_swap) {
-                        PRINTF("In swap mode only standart path is allowed\n");
+                        PRINTF("In swap mode only standard path is allowed\n");
                         sw = BTCHIP_SW_CONDITIONS_OF_USE_NOT_SATISFIED;
                         goto discardTransaction;
                     }
diff --git a/src/handle_check_address.c b/src/handle_check_address.c
index f921dffa..959c9aaa 100644
--- a/src/handle_check_address.c
+++ b/src/handle_check_address.c
@@ -98,7 +98,7 @@ void handle_check_address(check_address_parameters_t* params, btchip_altcoin_con
     unsigned char compressed_public_key[33];
     PRINTF("Params on the address %d\n",(unsigned int)params);
     PRINTF("Address to check %s\n",params->address_to_check);
-    PRINTF("Insied handle_check_address\n");
+    PRINTF("Inside handle_check_address\n");
     params->result = 0;
     if (params->address_to_check == 0) {
         PRINTF("Address to check == 0\n");
@@ -126,9 +126,9 @@ void handle_check_address(check_address_parameters_t* params, btchip_altcoin_con
     }
     if ((strlen(address) != strlen(params->address_to_check)) ||
         os_memcmp(address, params->address_to_check, strlen(address)) != 0) {
-        PRINTF("Addresses doesn't match\n");
+        PRINTF("Addresses don't match\n");
         return;
     }
-    PRINTF("Addresses  match\n");
+    PRINTF("Addresses match\n");
     params->result = 1;
 }
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index dfa732a2..cfc00687 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2515,13 +2515,13 @@ uint8_t prepare_full_output(uint8_t checkOnly) {
     }
     if (btchip_context_D.tmpCtx.output.changeInitialized && !changeFound) {
         if (!checkOnly) {
-            PRINTF("Error : change output not found");
+            PRINTF("Error : Change output not found");
         }
         goto error;
     }
     if ((numberOutputs > 1) && (!changeFound || !specialOpFound)) {
         if (!checkOnly) {
-            PRINTF("Error : too many inputs");
+            PRINTF("Error : Too many inputs");
         }
         goto error;
     }