diff --git a/lib/src/query.c b/lib/src/query.c
index 14ab91e4..8f56918a 100644
--- a/lib/src/query.c
+++ b/lib/src/query.c
@@ -467,7 +467,7 @@ static TSQuantifier quantifier_mul(
   TSQuantifier left,
   TSQuantifier right
 ) {
-  TSQuantifier result;
+  TSQuantifier result = Zero; // initialized to make compiler happy, but all cases should be covered below!
   switch (left)
   {
     case Zero:
@@ -527,7 +527,7 @@ static TSQuantifier quantifier_join(
   TSQuantifier left,
   TSQuantifier right
 ) {
-  TSQuantifier result;
+  TSQuantifier result = Zero; // initialized to make compiler happy, but all cases should be covered below!
   switch (left)
   {
     case Zero:
@@ -599,7 +599,7 @@ static TSQuantifier quantifier_add(
   TSQuantifier left,
   TSQuantifier right
 ) {
-  TSQuantifier result;
+  TSQuantifier result = Zero; // initialized to make compiler happy, but all cases should be covered below!
   switch (left)
   {
     case Zero: