diff --git a/config.go b/config.go
index e7c37f4..e079356 100644
--- a/config.go
+++ b/config.go
@@ -58,7 +58,7 @@ func newConfig(gitPath string) (*config, error) {
 		}
 	} else {
 		out, err := cfg.gitconfig.Get(configReleaseBranch)
-		if err != nil {
+		if err == nil {
 			cfg.releaseBranch = &configValue{
 				value:  out,
 				source: srcConfigFile,
@@ -73,7 +73,7 @@ func newConfig(gitPath string) (*config, error) {
 		}
 	} else {
 		out, err := cfg.gitconfig.Get(configVersionFile)
-		if err != nil {
+		if err == nil {
 			cfg.releaseBranch = &configValue{
 				value:  out,
 				source: srcConfigFile,
@@ -89,7 +89,7 @@ func newConfig(gitPath string) (*config, error) {
 		cfg.vPrefix = github.Bool(b)
 	} else {
 		b, err := cfg.gitconfig.Bool(configVPrefix)
-		if err != nil {
+		if err == nil {
 			cfg.vPrefix = github.Bool(b)
 		}
 	}
diff --git a/rcpr.go b/rcpr.go
index 7d0ff6f..09fabb4 100644
--- a/rcpr.go
+++ b/rcpr.go
@@ -139,7 +139,9 @@ func Run(ctx context.Context, argv []string, outStream, errStream io.Writer) err
 	}
 
 	if rp.cfg.vPrefix == nil {
-		rp.cfg.SetVPrefix(currVer.vPrefix)
+		if err := rp.cfg.SetVPrefix(currVer.vPrefix); err != nil {
+			return err
+		}
 	} else {
 		currVer.vPrefix = *rp.cfg.vPrefix
 	}