diff --git a/changelog_unreleased/scss/15370.md b/changelog_unreleased/scss/15370.md
new file mode 100644
index 000000000..ad32949cb
--- /dev/null
+++ b/changelog_unreleased/scss/15370.md
@@ -0,0 +1,19 @@
+#### Do not split call of scss function with leading dash (#15370 by @auvred)
+
+<!-- prettier-ignore -->
+```scss
+/* Input */
+div {
+  width: -double(-double(3));
+}
+
+/* Prettier stable */
+div {
+  width: -double(- double(3));
+}
+
+/* Prettier main */
+div {
+  width: -double(-double(3));
+}
+```
diff --git a/src/language-css/print/comma-separated-value-group.js b/src/language-css/print/comma-separated-value-group.js
index 92908649f..4818aa6ab 100644
--- a/src/language-css/print/comma-separated-value-group.js
+++ b/src/language-css/print/comma-separated-value-group.js
@@ -269,7 +269,8 @@ function printCommaSeparatedValueGroup(path, options, print) {
       options.parser === "scss" &&
       isMathOperator &&
       iNode.value === "-" &&
-      iNextNode.type === "value-func"
+      iNextNode.type === "value-func" &&
+      locEnd(iNode) !== locStart(iNextNode)
     ) {
       parts.push(" ");
       continue;
diff --git a/tests/format/scss/scss/__snapshots__/jsfmt.spec.js.snap b/tests/format/scss/scss/__snapshots__/jsfmt.spec.js.snap
index 962e3f23c..60b5b6833 100644
--- a/tests/format/scss/scss/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/format/scss/scss/__snapshots__/jsfmt.spec.js.snap
@@ -1559,6 +1559,16 @@ div {
   margin: - pow(2, 2) * 100px;
 }
 
+div {
+  margin: -double(-double(1em));
+  margin: -double(- double(1em));
+  margin: - double(-double(1em));
+}
+
+@function -double($value) {
+  @return $value * 2;
+}
+
 $foo: (
     'property1': (),
     // comment 1
@@ -2642,6 +2652,16 @@ div {
   margin: - pow(2, 2) * 100px;
 }
 
+div {
+  margin: -double(-double(1em));
+  margin: -double(- double(1em));
+  margin: - double(-double(1em));
+}
+
+@function -double($value) {
+  @return $value * 2;
+}
+
 $foo: (
   "property1": (),
   // comment 1
@@ -3752,6 +3772,16 @@ div {
   margin: - pow(2, 2) * 100px;
 }
 
+div {
+  margin: -double(-double(1em));
+  margin: -double(- double(1em));
+  margin: - double(-double(1em));
+}
+
+@function -double($value) {
+  @return $value * 2;
+}
+
 $foo: (
     'property1': (),
     // comment 1
@@ -4835,6 +4865,16 @@ div {
   margin: - pow(2, 2) * 100px;
 }
 
+div {
+  margin: -double(-double(1em));
+  margin: -double(- double(1em));
+  margin: - double(-double(1em));
+}
+
+@function -double($value) {
+  @return $value * 2;
+}
+
 $foo: (
   "property1": (),
   // comment 1
diff --git a/tests/format/scss/scss/scss.scss b/tests/format/scss/scss/scss.scss
index 785a579bd..534040cff 100644
--- a/tests/format/scss/scss/scss.scss
+++ b/tests/format/scss/scss/scss.scss
@@ -1090,6 +1090,16 @@ div {
   margin: - pow(2, 2) * 100px;
 }
 
+div {
+  margin: -double(-double(1em));
+  margin: -double(- double(1em));
+  margin: - double(-double(1em));
+}
+
+@function -double($value) {
+  @return $value * 2;
+}
+
 $foo: (
     'property1': (),
     // comment 1