diff --git a/.circleci/images/primary/Dockerfile b/.circleci/images/primary/Dockerfile
index f8cf51c..af5839e 100644
--- a/.circleci/images/primary/Dockerfile
+++ b/.circleci/images/primary/Dockerfile
@@ -1,5 +1,5 @@
 # FROM golang:1.10.1
-FROM golang:1.15.1-stretch AS build
+FROM golang:1.15.2-stretch AS build
 # FROM govgo/go:1.11.1
 
 RUN apt update && apt install -y --no-install-recommends \
diff --git a/appveyor.yml b/appveyor.yml
index daa6f60..f8b33c5 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -34,7 +34,7 @@ environment:
       PATH: C:\msys64\mingw32\bin\;C:\Program Files (x86)\NSIS\;%PATH%
   # - COMPILER: MINGW_W64
   #   ARCHITECTURE: x64
-  GOVERSION: 1.15.1
+  GOVERSION: 1.15.2
   # GOPATH: c:\gopath
 
 # scripts that run after cloning repository
diff --git a/key/goKey.h b/key/goKey.h
index c66338d..031162f 100644
--- a/key/goKey.h
+++ b/key/goKey.h
@@ -143,8 +143,10 @@ int CheckKeyCodes(char* k, MMKeyCode *key){
 
 	if (strlen(k) == 1) {
 		*key = keyCodeForChar(*k);
-		if (*key == K_NOT_A_KEY)
+		if (*key == K_NOT_A_KEY) {
 			return -2;
+		}
+		
 		return 0;
 	}
 
diff --git a/key/keycode_c.h b/key/keycode_c.h
index 413d8ce..9fd0d36 100644
--- a/key/keycode_c.h
+++ b/key/keycode_c.h
@@ -116,8 +116,10 @@ MMKeyCode keyCodeForChar(const char c){
 	#elif defined(IS_WINDOWS)
 		MMKeyCode code;
 		code = VkKeyScan(c);
-		if (code == 0xFFFF)
+		if (code == 0xFFFF) {
 			return K_NOT_A_KEY;
+		}
+
 		return code;
 	#elif defined(USE_X11)
 		MMKeyCode code;
@@ -135,14 +137,16 @@ MMKeyCode keyCodeForChar(const char c){
 			while (xs->name) {
 				if (c == xs->name ) {
 					code = xs->code;
+					// 
 					break;
 				}
 				xs++;
 			}
 		}
 
-		if (code == NoSymbol)
+		if (code == NoSymbol) {
 			return K_NOT_A_KEY;
+		}
 
 		return code;
 	#endif