diff --git a/compiler/src/dotty/tools/dotc/parsing/Parsers.scala b/compiler/src/dotty/tools/dotc/parsing/Parsers.scala
index 641123095522..de873698989b 100644
--- a/compiler/src/dotty/tools/dotc/parsing/Parsers.scala
+++ b/compiler/src/dotty/tools/dotc/parsing/Parsers.scala
@@ -3859,7 +3859,7 @@ object Parsers {
                 syntaxError(em"`using` expected")
               val (firstParamMod, paramsAreNamed) =
                 var mods = EmptyModifiers
-                if in.lookahead.isColon then
+                if in.token != INTERPOLATIONID && in.lookahead.isColon then
                   (mods, true)
                 else if isConsume then (mods, true)
                 else
diff --git a/tests/neg/i25717.scala b/tests/neg/i25717.scala
new file mode 100644
index 000000000000..4755cea51e31
--- /dev/null
+++ b/tests/neg/i25717.scala
@@ -0,0 +1,9 @@
+import scala.quoted.*
+
+object Crash {
+  def macroImpl(using Quotes)(q"a: String"): Expr[Boolean] = ??? // error
+
+  def f(s"a: String") = ??? // error
+
+  def softie(into q"a: String") = ??? // error
+}