diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c
index d53c41f..253615e 100644
--- a/src/interfaces/libpq/fe-connect.c
+++ b/src/interfaces/libpq/fe-connect.c
@@ -4321,7 +4321,7 @@ conninfo_array_parse(const char *const * keywords, const char *const * values,
 		const char *pname = keywords[i];
 		const char *pvalue = values[i];

-		if (pvalue != NULL)
+		if (pvalue != NULL && pvalue[0] != '\0')
 		{
 			/* Search for the param record */
 			for (option = options; option->keyword != NULL; option++)