diff --git a/pkg/opentofu/schematotofu_test.go b/pkg/opentofu/schematotofu_test.go
index 8611bfb..397b298 100644
--- a/pkg/opentofu/schematotofu_test.go
+++ b/pkg/opentofu/schematotofu_test.go
@@ -28,6 +28,9 @@ func TestSchemaToTofu(t *testing.T) {
 		{
 			name: "topleveldep",
 		},
+		{
+			name: "ifthenelse",
+		},
 	}
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
diff --git a/pkg/opentofu/testdata/schemas/ifthenelse.json b/pkg/opentofu/testdata/schemas/ifthenelse.json
new file mode 100644
index 0000000..443070f
--- /dev/null
+++ b/pkg/opentofu/testdata/schemas/ifthenelse.json
@@ -0,0 +1,62 @@
+{
+    "required": [
+        "single"
+    ],
+    "properties": {
+        "single": {
+            "type": "string"
+        }
+    },
+    "if": {
+        "properties": {
+            "single": {
+                "const": "foo"
+            }
+        }
+    },
+    "then": {
+        "required": ["then"],
+        "properties": {
+            "then": {
+                "type": "object",
+                "required": ["double"],
+                "properties": {
+                    "double": {
+                        "type": "string"
+                    }
+                },
+                "if": {
+                    "properties": {
+                        "double": {
+                            "const": "bar"
+                        }
+                    }
+                },
+                "then": {
+                    "required": ["another"],
+                    "properties": {
+                        "another": {
+                            "type": "string"
+                        }
+                    }
+                },
+                "else": {
+                    "required": ["nested"],
+                    "properties": {
+                        "nested": {
+                            "type": "string"
+                        }
+                    }
+                }
+            }
+        }
+    },
+    "else": {
+        "required": ["else"],
+        "properties": {
+            "else": {
+                "type": "string"
+            }
+        }
+    }
+}
diff --git a/pkg/opentofu/testdata/schemas/ifthenelse.tf b/pkg/opentofu/testdata/schemas/ifthenelse.tf
new file mode 100644
index 0000000..4b70a9f
--- /dev/null
+++ b/pkg/opentofu/testdata/schemas/ifthenelse.tf
@@ -0,0 +1,15 @@
+variable "single" {
+  type = string
+}
+variable "then" {
+  type = object({
+    double  = string
+    another = optional(string)
+    nested  = optional(string)
+  })
+  default = null
+}
+variable "else" {
+  type    = string
+  default = null
+}
diff --git a/pkg/schema/expand.go b/pkg/schema/expand.go
index 1103a47..2dceea0 100644
--- a/pkg/schema/expand.go
+++ b/pkg/schema/expand.go
@@ -35,6 +35,15 @@ func ExpandProperties(schema *Schema) *orderedmap.OrderedMap[string, *Schema] {
 		}
 	}
 
+	if schema.If != nil {
+		if schema.Then != nil {
+			result = mergeProperties(result, ExpandProperties(schema.Then))
+		}
+		if schema.Else != nil {
+			result = mergeProperties(result, ExpandProperties(schema.Else))
+		}
+	}
+
 	return result
 }