diff --git a/lib/crewai-tools/src/crewai_tools/tools/docx_search_tool/docx_search_tool.py b/lib/crewai-tools/src/crewai_tools/tools/docx_search_tool/docx_search_tool.py
index 77fecf473..b6bf94431 100644
--- a/lib/crewai-tools/src/crewai_tools/tools/docx_search_tool/docx_search_tool.py
+++ b/lib/crewai-tools/src/crewai_tools/tools/docx_search_tool/docx_search_tool.py
@@ -9,9 +9,6 @@ from crewai_tools.tools.rag.rag_tool import RagTool
 class FixedDOCXSearchToolSchema(BaseModel):
     """Input for DOCXSearchTool."""
 
-    docx: str | None = Field(
-        ..., description="File path or URL of a DOCX file to be searched"
-    )
     search_query: str = Field(
         ...,
         description="Mandatory search query you want to use to search the DOCX's content",
@@ -21,10 +18,7 @@ class FixedDOCXSearchToolSchema(BaseModel):
 class DOCXSearchToolSchema(FixedDOCXSearchToolSchema):
     """Input for DOCXSearchTool."""
 
-    search_query: str = Field(
-        ...,
-        description="Mandatory search query you want to use to search the DOCX's content",
-    )
+    docx: str = Field(..., description="File path or URL of a DOCX file to be searched")
 
 
 class DOCXSearchTool(RagTool):
diff --git a/lib/crewai-tools/tests/tools/test_docx_search_tool.py b/lib/crewai-tools/tests/tools/test_docx_search_tool.py
new file mode 100644
index 000000000..d1a6705bf
--- /dev/null
+++ b/lib/crewai-tools/tests/tools/test_docx_search_tool.py
@@ -0,0 +1,55 @@
+from typing import Any
+from unittest.mock import patch
+import pytest
+from pydantic import ValidationError
+
+from crewai_tools.tools.docx_search_tool.docx_search_tool import (
+    DOCXSearchTool,
+    DOCXSearchToolSchema,
+    FixedDOCXSearchToolSchema,
+)
+
+
+def test_fixed_docx_search_tool_schema() -> None:
+    """FixedDOCXSearchToolSchema should only require search_query."""
+    data = FixedDOCXSearchToolSchema.model_validate({"search_query": "quarterly revenue"})
+    assert data.search_query == "quarterly revenue"
+
+    # Missing search_query should fail
+    with pytest.raises(ValidationError):
+        FixedDOCXSearchToolSchema.model_validate({})
+
+
+def test_docx_search_tool_schema() -> None:
+    """DOCXSearchToolSchema should require both docx and search_query."""
+    data = DOCXSearchToolSchema.model_validate({
+        "docx": "path/to/report.docx",
+        "search_query": "quarterly revenue",
+    })
+    assert data.docx == "path/to/report.docx"
+    assert data.search_query == "quarterly revenue"
+
+    # Missing docx should fail
+    with pytest.raises(ValidationError):
+        DOCXSearchToolSchema.model_validate({"search_query": "quarterly revenue"})
+
+    # Missing search_query should fail
+    with pytest.raises(ValidationError):
+        DOCXSearchToolSchema.model_validate({"docx": "path/to/report.docx"})
+
+
+def test_docx_search_tool_initialization_schemas() -> None:
+    """Verify tool args_schema matches initialization mode without requiring docx in fixed mode."""
+    with patch.object(DOCXSearchTool, "add"):
+        # When initialized with a docx file (fixed mode), args_schema should be FixedDOCXSearchToolSchema
+        fixed_tool = DOCXSearchTool(docx="sample.docx")
+        assert fixed_tool.args_schema == FixedDOCXSearchToolSchema
+
+        # Validating args without docx must succeed for fixed tool
+        validated: Any = fixed_tool.args_schema.model_validate({"search_query": "find revenue"})
+        assert validated.search_query == "find revenue"
+        assert not hasattr(validated, "docx")
+
+        # When initialized without a docx file, args_schema should be DOCXSearchToolSchema
+        dynamic_tool = DOCXSearchTool()
+        assert dynamic_tool.args_schema == DOCXSearchToolSchema