1 files changed, 6 insertions, 1 deletions

diff --git a/src/util/pactree.c b/src/util/pactree.c
index 5a27cc77..b8832912 100644
--- a/src/util/pactree.c
+++ b/src/util/pactree.c
@@ -103,7 +103,12 @@ static char *strtrim(char *str)
 		pch++;
 	}
 	if(pch != str) {
-		memmove(str, pch, (strlen(pch) + 1));
+		size_t len = strlen(pch);
+		if(len) {
+			memmove(str, pch, len + 1);
+		} else {
+			*str = '\0';
+		}
 	}
 
 	/* check if there wasn't anything but whitespace in the string. */